Management Software. User s Guide AT-S84. For the AT-9000/24 Layer 2 Gigabit Ethernet Switch. Version Rev. B

Transcription

1 Management Software AT-S84 User s Guide For the AT-9000/24 Layer 2 Gigabit Ethernet Switch Version Rev. B

2 Copyright 2006 Allied Telesyn, Inc. All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn, Inc. Microsoft and Internet Explorer are registered trademarks of Microsoft Corporation. Netscape Navigator is a registered trademark of Netscape Communications Corporation. All other product names, company names, logos or other designations mentioned herein are trademarks or registered trademarks of their respective owners. Allied Telesyn, Inc. reserves the right to make changes in specifications and other information contained in this document without prior written notice. The information provided herein is subject to change without notice. In no event shall Allied Telesyn, Inc. be liable for any incidental, special, indirect, or consequential damages whatsoever, including but not limited to lost profits, arising out of or related to this manual or the information contained herein, even if Allied Telesyn, Inc. has been advised of, known, or should have known, the possibility of such damages.

3 Contents Preface Where to Find Web-based Guides Contacting Allied Telesyn Online Support and Telephone Support Returning Products Sales or Corporate Information Management Software Updates Chapter 1: Overview Management Overview Local Connection Remote Connection Using an SNMP Network Management Application Management Access Level Section I: Using the Menus Interface Chapter 2: Getting Started with the Menus Interface Starting a Local Management Session Using the Menus Interface Quitting from a Local Management Session Chapter 3: Basic Switch Parameters Configuring the IP Address, Subnet Mask, and Gateway Address Enabling and Disabling the DHCP Client Configuring System Administration Information Setting the User Interface Configuration Disabling or Enabling the Web Server Disabling or Enabling the Telnet Server Configuring SNTP Viewing Switch Information Rebooting the Switch Pinging a Remote System Viewing the System Log Returning the AT-S84 Management Software to the Factory Default Values Chapter 4: SNMP SNMP Overview Default SNMP Community Strings Enabling or Disabling the SNMP Agent Enabling Authentication Traps Changing the Default SNMP Community Names Working with Trap Receivers Adding a Trap Receiver Enabling or Disabling Trap Receivers

4 Contents Modifying a Trap Receiver...66 Deleting a Trap Receiver...67 Chapter 5: Port Configuration...69 Displaying the Port Parameters...70 Enabling or Disabling a Port...72 Setting a Port s Speed and Duplex Mode...73 Changing the Flow Control Setting...75 Changing the Back Pressure Setting...76 Displaying Port Statistics...77 Chapter 6: Port Trunking...81 Port Trunking Overview...82 Static Port Trunk Overview...82 Port Trunking Guidelines...83 LACP Trunks...84 LACP Trunk Status...84 LACP Port Priority Parameter...85 LACP Trunk Guidelines...86 Setting Up a Port Trunk...88 Creating a Port Trunk...88 Modifying a Port Trunk...90 Enabling or Disabling a Port Trunk...91 Setting Up an LACP Trunk...92 Creating an LACP Trunk...92 Configuring the LACP Port Priority...93 Verifying the LACP Group Settings...94 Disabling an LACP Trunk...95 Chapter 7: Port Mirroring...97 Port Mirroring Overview...98 Configuring Port Mirroring...99 Enabling or Disabling Port Mirroring Chapter 8: Virtual LANs and GVRP VLAN Features Increased Performance Improved Manageability Increased Security VLAN Overview VLAN Name VLAN Identifier Port VLAN Identifier VLAN Port Members Tagged Port Members Untagged Port Members Incoming and Outgoing Tagged and Untagged Frames Incoming Frames Outgoing Frames Guidelines for Creating a VLAN Untagged VLAN Tagged VLAN Example Working with VLANS Creating a VLAN Configuring the Port PVID Displaying the VLANs Modifying a VLAN

5 AT-S84 Management Software User s Guide Changing the VLAN Name Adding or Removing a Tagged Port in a VLAN Deleting a VLAN Resetting to the Default VLAN GVRP GVRP Overview Guidelines Enabling or Disabling GVRP Chapter 9: Quality of Service (QoS) QoS Overview Mapping CoS Priorities to Egress Queues Configuring CoS Chapter 10: IGMP Snooping IGMP Snooping Overview Configuring IGMP Viewing the Multicast Groups Chapter 11: Rapid Spanning Tree Protocol (RSTP) RSTP Overview Bridge Priority and the Root Bridge Designated Bridge and Designated Port Path Costs and Port Costs Port Priority Hello Time and Bridge Protocol Data Units (BPDUs) Point-to-Point and Edge Ports Mixed STP and RSTP Networks Rapid Spanning Tree and VLANs Enabling or Disabling RSTP Configuring the RSTP Bridge Settings Configuring STP Compatibility Configuring RSTP Port Settings Configuring the Basic RSTP Port Settings Configuring the Advanced RSTP Port Settings Displaying the RSTP Topology Chapter 12: 802.1x Network Access Control x Network Access Control Overview Authentication Process Authenticator Ports General Steps Network Access Control Guidelines Configuring 802.1x Network Access Control Chapter 13: RADIUS Authentication Protocol RADIUS Overview RADIUS Implementation Guidelines Configuring the RADIUS Server Displaying the RADIUS Server Settings Chapter 14: Broadcast Storm Control Broadcast Storm Control Overview Configuring Broadcast Storm Control Chapter 15: Working With System Files Downloading a New Management Software Image Using TFTP Uploading or Downloading a Configuration File

6 Contents Uploading the Configuration File Downloading a Configuration File Section II: Using the Web Browser Interface Chapter 16: Starting a Web Browser Management Session Establishing a Remote Connection to Use the Web Browser Interface Web Browser Tools Quitting a Web Browser Management Session Chapter 17: Basic Switch Parameters Configuring an IP Address, Subnet Mask and Gateway Address Enabling and Disabling the DHCP Client Configuring System Administration Information Setting the User Interface Configuration Enabling or Disabling the Web Server Enabling or Disabling the Telnet Server Configuring SNTP Viewing System Information Rebooting a Switch Pinging a Remote System Viewing the System Log Returning the AT-S84 Management Software to the Factory Default Values Chapter 18: Port Configuration Viewing and Configuring Multiple Ports Viewing and Configuring a Single Port Displaying Port Statistics Chapter 19: SNMP Enabling or Disabling the SNMP Agent Changing the Default SNMP Community Names Working with Trap Receivers Adding and Enabling a Trap Receiver Disabling a Trap Receiver Deleting a Trap Receiver Chapter 20: Port Trunking Setting Up a Port Trunk Creating a Port Trunk Enabling or Disabling a Port Trunk Setting Up an LACP Trunk Creating an LACP Trunk Configuring the LACP Port Priority Verifying the LACP Group Settings Disabling an LACP Trunk Chapter 21: Port Mirroring Configuring Port Mirroring Disabling Port Mirroring Chapter 22: Virtual LANs Creating a VLAN Configuring the PVID of Untagged Ports Displaying the VLANs Modifying a VLAN Deleting a VLAN

7 AT-S84 Management Software User s Guide Deleting All VLANs Enabling or Disabling GVRP Chapter 23: Quality of Service (QoS) Mapping CoS Priorities to Egress Queues Configuring CoS Chapter 24: IGMP Configuring IGMP Viewing the Multicast Group Members Chapter 25: RSTP Basic RSTP Configuration Configuring RSTP Port Settings Configuring the Basic RSTP Port Settings Configuring the Advanced RSTP Port Settings Viewing the RSTP Topology Chapter 26: 802.1x Network Access Control Configuring 802.1x Network Access Control Chapter 27: RADIUS Authentication Protocol Configuring the RADIUS Client Chapter 28: Broadcast Storm Control Configuring Broadcast Storm Control Chapter 29: Working with System Files Downloading a New Management Software Image Using TFTP Uploading or Downloading a Configuration File Section III: Using the Command Line Interface Chapter 30: Getting Started with the Command Line Interface CLI Command Modes Introduction Command Formatting Conventions User EXEC Command Mode Privileged EXEC Command Mode Global Configuration Command Mode Interface Configuration Command Mode Port Mirroring Example VLAN Configuration Command Mode VLAN Example Starting the Command Line Interface Command Formatting Command Line Interface Features Command Line Syntax Conventions Appendix A: AT-S84 Default Settings Basic Switch Default Settings System Reboot Default Settings User Interface Configuration Default Settings Management Interface Default Settings Ping Default Settings System IP Configuration Default Settings System Administration Configuration Default Settings SNMP Default Settings Port Configuration Default Settings

8 Contents Quality of Service IGMP Snooping Default Settings RSTP Default Settings x Network Access Control Default Settings RADIUS Server Default Settings Broadcast Storm Control Default Settings Index

9 Figures Figure 1. Connecting the Management Cable to the Console Port...26 Figure 2. Login Menu...27 Figure 3. Main Menu...27 Figure 4. Basic Switch Configuration Menu...32 Figure 5. System IP Configuration Menu...33 Figure 6. System Admin. Configuration Menu...36 Figure 7. User Interface Configuration Menu...38 Figure 8. SNTP Configuration Menu...44 Figure 9. Time Zone Configuration Menu...45 Figure 10. General Information Menu...47 Figure 11. Switch Tools Configuration Menu...50 Figure 12. System Reboot Menu...51 Figure 13. Ping Execution Menu...52 Figure 14. Ping Results...54 Figure 15. System Log Menu...55 Figure 16. SNMP Configuration Menu...63 Figure 17. Port Configuration Menu...70 Figure 18. Statistics Menu...77 Figure 19. Static Port Trunk Example...82 Figure 20. LACP Trunk Example...84 Figure 21. Advanced Switch Configuration Menu...88 Figure 22. Trunk Configuration Menu...89 Figure 23. LACP Port Priority Menu...93 Figure 24. LACP Group Status Menu...95 Figure 25. Port Mirroring Menu...99 Figure 26. Untagged VLAN Figure 27. Tagged VLAN Figure 28. VLAN Management Menu Figure 29. VLAN Creation Menu Figure 30. Config VLAN Member Menu Figure 31. GVRP Example Figure 32. Quality of Service Configuration Menu Figure 33. Traffic Class Configuration Menu Figure 34. Port Priority Configuration Menu Figure 35. IGMP Configuration Menu Figure 36. MAC Address DIsplayed on IGMP Configuration Menu Figure 37. View Group Members Menu Figure 38. Point-to-Point Ports Figure 39. Edge Port Figure 40. Point-to-Point and Edge Port Figure 41. VLAN Fragmentation Figure 42. RSTP Configuration Menu Figure 43. RSTP Basic Port Configuration Menu Figure 44. RSTP Advanced Port Configuration Menu Figure 45. Topology Information Menu Figure 46. Example of the Authenticator Role Figure 47. Authentication Across Multiple Switches Figure 48. Port Based Access Control Configuration Menu Figure 49. RADIUS Server Configuration Menu Figure 50. Storm Control Configuration Menu

10 Figures Figure 51. Software Upgrade Menu (1 of 2) Figure 52. Software Upgrade Menu (2 of 2) Figure 53. Configuration File Upload/Download Menu Figure 54. TFTP Configuration File Upload/Download Menu Figure 55. Entering a Switch s IP Address in the URL Field Figure 56. AT-S84 Login Dialog Box Figure 57. Home Page for the AT-9000/24 Gigabit Ethernet Switch Figure 58. IP Configuration Page Figure 59. Administration Configuration Page Figure 60. User Interface Page Figure 61. SNTP Configuration Page Figure 62. Switch Information Page Figure 63. System Reboot Configuration Page Figure 64. Ping Test Configuration Page Figure 65. Ping Test Results Page Figure 66. System Log Page Figure 67. Port Configuration Page Figure 68. Configuration of Port Page Figure 69. Statistics Page Figure 70. SNMP Configuration Page Figure 71. Trunk Configuration Page Figure 72. LACP Port Priority Page Figure 73. LACP Group Status Page Figure 74. Port Mirroring Page Figure 75. Create VLAN Page Figure 76. PVID Page Figure 77. VLAN Configuration - Members Page Figure 78. VLAN Information Page Figure 79. Modify VLAN Page Figure 80. Traffic Class Configuration Page Figure 81. Port Priority Configuration Page Figure 82. IGMP Snooping Page Figure 83. IGMP Snooping - Group Members Page Figure 84. Rapid Spanning Tree Configuration Page Figure 85. RSTP Basic Port Configuration Page Figure 86. RSTP Advanced Port Configuration Page Figure 87. Designated Topology Information Page Figure x Configuration Page Figure 89. RADIUS Configuration Page Figure 90. Broadcast Storm Control Page Figure 91. Image Upgrade Page Figure 92. Configuration File Upload/Download Page Figure 93. Main Menu Figure 94. Command Line Prompt, User Executive Mode

11 Tables Table 1. Menus Interface Operations...28 Table 2. Default Mappings of IEEE 802.1p Priority Levels to Egress Port Priority Queues Table 3. RSTP Auto-Detect Port Costs Table 4. RSTP Auto-Detect Port Trunk Costs Table 5. Port Priority Value Increments Table 6. RSTP Point-to-Point Status Table 7. RSTP Point-to-Point Status Table 8. Command Modes Table 9. User EXEC Command Mode Commands Table 10. Privileged EXEC Command Mode Commands Table 11. Global Configuration Command Mode Commands Table 12. Interface Configuration Command Mode Commands Table 13. VLAN Configuration Command Mode Commands Table 14. Command Line Syntax Conventions

12 Tables 12

13 Preface This guide contains instructions on how to use the AT-S84 management software to manage and monitor the AT-9000/24 Gigabit Ethernet switch. The AT-S84 management software has three management interfaces: menus, web browser, and CLI. You access the menus and CLI interfaces through the console port on the switch or through Telnet, and the web browser interface from any management workstation on your network that has a web browser application. For background information on the management interfaces, refer to Chapter 1, Overview on page 17. This preface contains the following sections: Where to Find Web-based Guides on page 14 Contacting Allied Telesyn on page 15 13

14 Preface Where to Find Web-based Guides The installation and user guides for all Allied Telesyn products are available in portable document format (PDF) on our web site at You can view the documents online or download them onto a local workstation or server. 14

15 AT-S84 Management Software User s Guide Contacting Allied Telesyn This section provides Allied Telesyn contact information for technical support as well as sales and corporate information. Online Support and Telephone Support Returning Products You can request technical support online by accessing the Allied Telesyn Knowledge Base: You can use the Knowledge Base to submit questions to our technical support staff and review answers to previously asked questions. For Technical Support via or telephone, refer to the Support & Services section of the Allied Telesyn web site: Products for return or repair must first be assigned a return materials authorization (RMA) number. A product sent to Allied Telesyn without an RMA number will be returned to the sender at the sender s expense. To obtain an RMA number, contact Allied Telesyn Technical Support through our web site: Sales or Corporate Information Management Software Updates You can contact Allied Telesyn for sales or corporate information through our web site: To find the contact information for your country, select Contact Us -> Worldwide Contacts. New releases of management software for our managed products are available from either of the following Internet sites: Allied Telesyn web site: Allied Telesyn FTP server: ftp://ftp.alliedtelesyn.com To download new software from the Allied Telesyn FTP server from your workstation s command prompt, you must have FTP client software. Additionally, you must log in to the server. The user name is anonymous and your address is the password. 15

16 Preface 16

17 Chapter 1 Overview This chapter provides an overview of the AT-S84 management software for the AT-9000/24 Gigabit Ethernet switch. This chapter describes the different methods for accessing the software and the management access levels. This chapter contains the following sections: Management Overview on page 18 Local Connection on page 19 Remote Connection on page 20 Management Access Level on page 21 17

18 Chapter 1: Overview Management Overview The AT-S84 management software allows you to view and adjust the operating parameters of the AT-9000/24 Gigabit Ethernet switch. Here are a few examples of the functions that you can perform with the management software: Enable and disable ports Configure a port s speed and duplex mode Create port trunks Configure a port mirror Configure Quality of Service (QoS) Create and tagged virtual LANs Configure 802.1x network access control The AT-S84 management software is preinstalled on the switch with default settings for all of the switch s operating parameters. You do not have to manage the switch if the default settings are adequate for your network. Instead, you can use the device as an unmanaged switch by connecting it to your network, as explained in the hardware installation guide, and powering on the unit. Note The default settings for the management software are listed in Appendix A, AT-S84 Default Settings on page 319. To actively manage the switch and adjust its operating parameters, you must connect to an AT-9000/24 Gigabit Ethernet switch and access the switch s AT-S84 management software. There are two ways to connect to the switch: Locally Remotely Depending upon the method you choose, specific AT-S84 management software interfaces are available. When you have a local connection, you can use the menus (described in Section I of this guide) or the command line interface (CLI) (described in Section III). With a remote connection you can use the menus, CLI, and web browser interfaces, or a third-party network management application. (The web browser interface is described in Section II). The following sections in this chapter briefly describe each type of management session. 18

19 AT-S81 Management Software User s Guide Local Connection To establish a local connection with a switch, you connect a terminal or a PC with a terminal emulator program to the terminal port on the front of the switch using the management cable included with the unit. This type of connection is referred to as local because you must be physically close to the switch, such as in the wiring closet where the switch is located. Note For instructions on how to start a local management session, refer to Starting a Local Management Session on page 26. With a local connection, you can manage the switch using the menus or CLI. A switch does not need an Internet Protocol (IP) address for you to manage it locally. You can start a local management session on a switch at any time. It does not interfere with the forwarding of network packets by the device. 19

20 Chapter 1: Overview Remote Connection You can use any management station on your network that has the Telnet application, an SNMP manager, or as web browser to manage an AT-9000/24 Gigabit Ethernet switch. These are referred to as remote connections. In order for you to manage a switch using a remote connection, the switch must have an IP address and subnet mask. To manually assign an IP address, refer to Configuring the IP Address, Subnet Mask, and Gateway Address on page 32. To configure the switch to obtain its IP configuration from a DHCP server, refer to Enabling and Disabling the DHCP Client on page 35. The initial assignment of an IP address must be made through a local management session. For instructions on how to start a remote management session to use the web browser interface, refer to Establishing a Remote Connection to Use the Web Browser Interface on page 200. Using an SNMP Network Management Application You can use the Simple Network Management Protocol (SNMP) to run a network management application such as AT-View to manage the switch through a remote connection. A familiarity with how to use management information base (MIB) objects is necessary for this type of management. The AT-S84 management software supports the following MIBs: SNMP MIB-II (RFC 1213) Bridge MIB (RFC 1493) Remote Network MIB (RFC 1757) Allied Telesyn managed switch MIB You must download the Allied Telesyn managed switch MIB (atiswitch.mib) file from the Allied Telesyn web site and compile the files with your SNMP application. For compilation instructions, refer to your third-party application s documentation. Refer to Chapter 4, SNMP on page 59 for information about how to configure SNMP on the switch. 20

21 AT-S81 Management Software User s Guide Management Access Level The AT-S84 management software has one level of management access: manager. When you log in as a manager, you can view and configure all of a switch s operating parameters. You log in as a manager by entering the appropriate username and password when you start an AT-S84 management session. The default username and password are both manager. 21

22 Chapter 1: Overview 22

23 Section I Using the Menus Interface The chapters in this section explain how to manage the switch using the menus interface of the AT-S84 management software. The chapters include: Chapter 2, Getting Started with the Menus Interface on page 25 Chapter 3, Basic Switch Parameters on page 31 Chapter 5, Port Configuration on page 69 Chapter 4, SNMP on page 59 Chapter 6, Port Trunking on page 81 Chapter 7, Port Mirroring on page 97 Chapter 8, Power Over Ethernet on page 81 Chapter 8, Virtual LANs and GVRP on page 103 Chapter 9, Quality of Service (QoS) on page 125 Chapter 10, IGMP Snooping on page 137 Chapter 11, Rapid Spanning Tree Protocol (RSTP) on page 145 Chapter 12, 802.1x Network Access Control on page 167 Chapter 13, RADIUS Authentication Protocol on page 179 Chapter 14, Broadcast Storm Control on page 185 Chapter 15, Working With System Files on page 189 Note The web browser interface is described in Section II, Using the Web Browser Interface on page 197, and the command line interface is described in Section III, Using the Command Line Interface on page 303. Section I: Using the Menus Interface 23

24 24 Section I: Using the Menus Interface

25 Chapter 2 Getting Started with the Menus Interface This chapter provides information and instructions on how to access the menus interface of the AT-S84 management software by starting a local management session. This chapter contains the following sections: Starting a Local Management Session on page 26 Using the Menus Interface on page 28 Quitting from a Local Management Session on page 29 Section I: Using the Menus Interface 25

26 Chapter 2: Getting Started with the Menus Interface Starting a Local Management Session You establish a local management session with the AT-9000/24 Gigabit Ethernet switch by connecting a terminal or personal computer with a terminal emulation program to the RS-232 console port on the front panel of the switch. Note You do not need to assign an IP address to the switch to manage the unit from a local management session. To start a local management session, perform the following procedure: 1. Connect one end of the management cable included with the switch to the console port on the AT-9000/24 Gigabit Ethernet switch, as shown in Figure Figure 1. Connecting the Management Cable to the Console Port 2. Connect the other end of the cable to the RS-232 port on a terminal or PC with a terminal emulator program. 3. Configure the terminal or terminal emulator program as follows: Baud per second: 9600 Data bits: 8 Stop bits: 1 Flow control: None Note These settings are for a DEC VT100 or ANSI terminal, or an equivalent terminal emulation program. You cannot change this. 26 Section I: Using the Menus Interface

27 AT-S84 Management Software User s Guide The Login Menu is shown in Figure 2. ============================================================== AT-9000/24 Management System Local - Console Allied Telesyn International Corp. Copyright 2006 ============================================================== Login Menu Login: Figure 2. Login Menu 4. Enter the manager login name and press Return. The default name is manager. You are prompted for a password. 5. Enter the manager password. The default password is friend. Note To change the login name or password, refer to Setting the User Interface Configuration on page 38. The Main Menu is shown in Figure 3. AT-9000/24 Local Management System Enter the character in square brackets to select option Main Menu [G]eneral Information [B]asic Switch Configuration [A]dvanced Switch Configuration Switch [T]ools [S]tatistics [C]ommand Line Interface [Q]uit Command> Figure 3. Main Menu Section I: Using the Menus Interface 27

28 Chapter 2: Getting Started with the Menus Interface Using the Menus Interface If you are using a DEC VT00 or ANSI (the default) terminal configuration, refer to Table 1 for instructions on how to move through the menus and select menu options. Table 1. Menus Interface Operations When directed to Make a menu selection Enter information (for example, entering a port number) Return to previous menu You must Type the menu option letter enclosed in brackets, such as typing P to select [P]ort Configuration. Type the information and press Enter. Type Q for Quit to previous menu. When you enter a letter to select a field in which you can enter a value, a message is displayed. For example: Enter new password> The > symbol indicates that you can enter a new value for the parameter or change the existing value. After you have entered a value, press Enter. Changes are immediately activated on the AT-9000/24 Gigabit Ethernet switch. Note The web browser interface is described in Section II, Using the Web Browser Interface on page 197, and the command line interface is described in Section III, Using the Command Line Interface on page Section I: Using the Menus Interface

29 AT-S84 Management Software User s Guide Quitting from a Local Management Session To quit a local management session, return to the Main Menu and type Q for Quit. When you are finished managing the switch, make sure to exit from a management session. Quitting from a local session prevents unauthorized changes to the switch s configuration if you leave your workstation unattended. Note A local management session automatically times out if there is no management activity during a pre-defined length of time referred to as the timeout period. The timeout feature is intended to protect the parameter settings on the switch from unauthorized changes should you leave your management station unattended during a management session. The default timeout value is 10 minutes. To change the timeout default value, refer to Setting the User Interface Configuration on page 38. Section I: Using the Menus Interface 29

30 Chapter 2: Getting Started with the Menus Interface 30 Section I: Using the Menus Interface

31 Chapter 3 Basic Switch Parameters This chapter contains the following sections: Configuring the IP Address, Subnet Mask, and Gateway Address on page 32 Enabling and Disabling the DHCP Client on page 35 Configuring System Administration Information on page 36 Setting the User Interface Configuration on page 38 Disabling or Enabling the Web Server on page 42 Disabling or Enabling the Telnet Server on page 43 Configuring SNTP on page 44 Viewing Switch Information on page 47 Rebooting the Switch on page 50 Pinging a Remote System on page 52 Returning the AT-S84 Management Software to the Factory Default Values on page 57 Section I: Using the Menus Interface 31

32 Chapter 3: Basic Switch Parameters Configuring the IP Address, Subnet Mask, and Gateway Address This procedure explains how to manually assign an IP address, subnet mask, and gateway address to the switch. Before performing the procedure, note the following: An IP address and subnet mask are not required for normal network operations of the switch. Values for these parameters are only required if you want to remotely manage the device with a web browser. A gateway address is only required if you want to remotely manage the device from a remote management station that is separated from the switch by a router. To configure the switch to automatically obtain its IP configuration from a DHCP server on your network, go to Enabling and Disabling the DHCP Client on page 35. To set the switch s IP configuration, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4. AT-9000/24 Local Management System Main Menu -> Basic Switch Configuration Menu System [A]dministration Configuration System [I]P Configuration S[N]MP Configuration [P]ort Configuration [U]ser Interface Configuration Rapid [S]panning Tree Configuration Storm [C]ontrol Configuration SN[T]P Configuration [Q]uit to previous menu Command> Figure 4. Basic Switch Configuration Menu 32 Section I: Using the Menus Interface

33 AT-S84 Management Software User s Guide 2. From the Basic Switch Configuration Menu, type I to select System IP Configuration. The System IP Configuration Menu is shown in Figure 5. AT-9000/24 Local Management System Basic Switch Configuration -> System IP Configuration Menu MAC Address: 00:06:5H:B2:65:84 IP Address: Subnet Mask: Gateway: DHCP Mode: Disabled <COMMAND> Set [I]P Address Set Subnet [M]ask Set Default [G]ateway Enable/Disable [D]HCP Mode [Q]uit to previous menu Command> Figure 5. System IP Configuration Menu The top portion of the menu displays the current IP address, subnet mask, and gateway address for the switch. The menu also displays the switch s MAC address. The MAC address cannot be changed. The menu also displays the current status of the DHCP client on the switch. The Enable/Disable DHCP Mode option is described in Enabling and Disabling the DHCP Client on page To set the switch s IP address, do the following: a. Type I to select Set IP Address. The following prompt is displayed: Enter new IP address> b. Type the IP address for the switch and press Enter. 4. To set the switch s subnet mask, do the following: a. Type M to select Set Subnet Mask. The following prompt is displayed: Enter new subnet mask> Section I: Using the Menus Interface 33

34 Chapter 3: Basic Switch Parameters b. Type the subnet mask for the switch and press Enter. 5. To set the switch s gateway address, do the following: a. Type G to select Set Default Gateway. The following prompt is displayed: Enter new gateway IP address> b. Type the gateway IP address for the switch and press Enter. 34 Section I: Using the Menus Interface

35 AT-S84 Management Software User s Guide Enabling and Disabling the DHCP Client This procedure explains how to activate and deactivate the DHCP client on the switch. When the client is activated, the switch obtains its IP configuration, such as its IP address and subnet mask, from a DHCP server on your network. Before performing the procedure, note the following: An IP address and subnet mask are not required for normal network operations of the switch. Values for these parameters are only required if you want to remotely manage the device with a web browser. The DHCP client is disabled by default on the switch. The DHCP client does not support BOOTP servers. To activate or deactivate the DHCP client on the switch, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type I to select System IP Configuration. The System IP Configuration Menu is shown in Figure 5 on page Type D to select Enable/Disable DHCP Mode. The following prompt is displayed: Enable or Disable DHCP mode (E/D)> 4. Type E to select Enable or D to select Disable. If you enable the client, it immediately begins to send queries to the DHCP server. It continues to send queries until it receives a response. Section I: Using the Menus Interface 35

36 Chapter 3: Basic Switch Parameters Configuring System Administration Information This section explains how to assign a name to the switch, as well as specify the location of the switch and the name of the switch s administrator. Entering this information is optional. To set a switch s administration information, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type A to select System Administration Information. The System Administration Configuration Menu is shown in Figure 6. AT-9000/24 Local Management System Basic Switch Configuration -> System Admin. Configuration Menu Description: AT-9000/24 ObjectID: Name: Location: Contact: <COMMAND> Set System [N]ame Set System [L]ocation Set System [C]ontact Information [Q]uit to previous menu Command> Figure 6. System Admin. Configuration Menu The Description parameter in the top portion of the menu displays the model name of the switch. The System Object ID parameter is the numeric ID of the switch. You cannot change these parameters. 3. To set the system s name, do the following: a. Type N to select Set System Name. The following prompt is displayed: 36 Section I: Using the Menus Interface

37 AT-S84 Management Software User s Guide Enter system name> b. Type a name for the switch (for example, Sales). The name is optional and can contain up to 50 characters. Note Allied Telesyn recommends that you assign names to the switches. Names can help you identify the switches when you manage them and can also help you avoid performing a configuration procedure on the wrong switch. 4. To enter the system s location, do the following: a. Type L to select Set System Location. The following prompt is displayed: Enter system location> b. Type information to describe the location of the switch (for instance, Third Floor). The location is optional and can contain up to 50 characters. 5. To enter the administrator s name, do the following: a. Type C to select Set System Contact Information. The following prompt is displayed: Enter system contact> b. Type the name of the network administrator responsible for managing the switch. The contact name is optional and can contain up to 50 characters. Section I: Using the Menus Interface 37

38 Chapter 3: Basic Switch Parameters Setting the User Interface Configuration This procedure explains how to adjust the user interface and security features on the switch. With this procedure you can change various settings that control user access to the switch. To set the switch s user interface configuration, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type U to select User Interface Configuration. The User Interface Configuration Menu is shown in Figure 7. AT-9000/24 Local Management System Basic Switch Configuration -> User Interface Configuration Menu Console UI Idle Timeout: Telnet UI Idle Timeout: 5 Min. 5 min. Telnet Server: SNMP Agent: Web Server: User Name: Enabled Enabled Enabled manager <COMMAND> Set [C]onsole UI Time Out Enable/Disable Te[l]net Server Set [T]elnet UI Time Out Enable/Disable [S]NMP Agent Change Administrator User [N]ame Enable/Disable [W]eb Server Change Administrator [P]assword [Q]uit to previous menu [R]ADIUS Server Configuration Command> Figure 7. User Interface Configuration Menu The Telnet server option is described in Disabling or Enabling the Telnet Server on page 43. The web server option is described in Disabling or Enabling the Web Server on page Section I: Using the Menus Interface

39 AT-S84 Management Software User s Guide The SNMP option is described in Enabling or Disabling the SNMP Agent on page 62. The RADIUS Server Configuration option is described Chapter 13, RADIUS Authentication Protocol on page To configure the console UI idle time out parameter, do the following: a. Type C to select Set Console UI Time Out. The following prompt is displayed: Enter console idle timeout> b. Enter a number for the timeout value. The range is 0 to 60 minutes, and the default is 5 minutes. A timeout value to 0 causes the switch to never time out a local management session. The console UI idle time out parameter specifies the length of time a local management session can be inactive before the management software automatically ends it. This feature prevents unauthorized individuals from configuring the switch if you leave your management workstation unattended. This parameter applies to a local management session but not to a remote SNMP or web management session. An SNMP management session remains active as long as the network management application is active. A web browser management session remains active as long as your web browser is open. Note If you select 0, you must always remember to properly log off from a local management session when you are finished to prevent blocking future management sessions with the switch. 4. To configure the Telnet UI idle time out parameter, do the following: a. Type T to select Set Telnet UI Time Out. The following prompt is displayed: Enter console idle timeout> b. Enter a number for the timeout value. The range is 0 to 60 minutes, and the default is 5 minutes. A timeout value to 0 causes the switch to never timeout a local management session. Section I: Using the Menus Interface 39

40 Chapter 3: Basic Switch Parameters The Telnet UI idle time out parameter specifies the length of time a remote Telnet management session can be inactive before the management software automatically ends it. This feature prevents unauthorized individuals from configuring the switch if you leave your management workstation unattended. This parameter applies to a local management session but not to a remote SNMP or web management session. An SNMP management session remains active as long as the network management application is active. A web browser management session remains active as long as your web browser is open. 5. To change the AT-S84 management login user name, do the following: a. Type N to select Change Administrator User Name. The following prompt is displayed: Enter current password> b. Enter the current login password. The management software prompts you for the password to prevent an unauthorized individual from changing the login name. c. Type the new user name and press Enter. The default name is manager. The name can be from 0 to 12 characters. Spaces are allowed. The login name is case sensitive. Not entering a new login name deletes the current login name without assigning a new one. The new user name appears in the User Field in the top portion of the menu. You must use the new login user name the next time you start a local or web browser management session. 6. To change the manager login password, do the following: a. Type P to select Change Administrator Password. The following prompt is displayed: Enter old password> b. Enter the current manager password and press Enter. The following prompt is displayed: Enter new password> 40 Section I: Using the Menus Interface

41 AT-S84 Management Software User s Guide c. Type the new password and press Enter. The password can be from 0 to 12 characters. Allied Telesyn recommends not using special characters, such as spaces and exclamation points. The password is case sensitive. Not entering a new password deletes the current password without assigning a new one. The following prompt is displayed: Retype new password> d. Retype the new password and press Enter. You must use the new login password the next time you start a local or remote 3management session. Section I: Using the Menus Interface 41

42 Chapter 3: Basic Switch Parameters Disabling or Enabling the Web Server The AT-S84 management software is shipped with web server software. The software is available so that you can remotely manage the switch with a web browser from any management station on your network. (The instructions for managing a switch with a web browser are described in Chapter 16, Starting a Web Browser Management Session on page 199.) The default setting for the web server is enabled, To disable or enable the web server, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type U to select User Interface Configuration. The User Interface Configuration Menu is shown in Figure 7 on page From the User Interface Configuration Menu, type W to select Enable/ Disable Web Server. The following prompt is displayed: Enable or Disable Web server (E/D)> 4. Type D to disable the web server or E to enable it. 42 Section I: Using the Menus Interface

43 AT-S84 Management Software User s Guide Disabling or Enabling the Telnet Server This procedure describes how to enable or disable the Telnet server on the switch. The default setting for the Telnet server is enabled, To disable or enable the Telnet server, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type I to select User Interface Configuration. The User Interface Configuration Menu is shown in Figure 7 on page From the User Interface Configuration Menu, type L to select Enable/ Disable Telnet Server. The following prompt is displayed: Enable or Disable Telnet server (E/D)> 4. Type D to disable the Telnet server or E to enable it. Section I: Using the Menus Interface 43

44 Chapter 3: Basic Switch Parameters Configuring SNTP The AT-S84 software is shipped with the client version of the Simple Network Time Protocol (SNTP). You can configure AT-S84 to obtain the current time and date from an SNTP or Network Time Protocol (NTP) server located on your network or on the internet. SNTP is a reduced version of the NTP. However, the SNTP client software is interoperable with NTP servers. To configure SNTP, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type T to select Set SNTP Server IP. The SNTP Configuration Menu is shown in Figure 8 AT-9000/24 Local Management System Basic Switch Configuration -> SNTP Configuration Menu Time ( HH:MM:SS ) : 00:19:58 Date ( YYYY/MM/DD) : 2006/01/01 SNTP Server IP : Enabled SNTP Polling Interval : Enabled Time Zone : GMT (+800:Taipei) Daylight Saving : Disabled <COMMAND> Set SNTP Server I[P] Set SNTP [I]nterval S[e]t Daylight Saving Set Time [Z]one [Q]uit to previous menu Command> Figure 8. SNTP Configuration Menu 3. Configure the SNTP server s IP address: a. Type P to select Set SNTP Server IP. 44 Section I: Using the Menus Interface

45 AT-S84 Management Software User s Guide The following prompt is displayed: Enter new IP address> b. Type the IP address for the SNTP server you want to use. 4. To set the SNTP interval: a. Type I to select Set SNTP Interval. The following prompt is displayed: Enter Interval Time> b. Type a number to specify the number of minutes between occurrences of polling the SNTP server. The range is 1 to 60 minutes and the default is 1 minute. 5. To set the time zone: a. Type Z to select Set Time Zone. The Time Zone Configuration Menu is shown in Figure 9. AT-8000/8POE Local Management System Switch Tools Configuration -> Time Zone Configuration Menu Time Zone : (GMT+8:00) Taipei Daylight Saving : Disabled Type Time Zone Nation or City (GMT-12:00) Eniwetok,Kwajalein 2 (GMT-11:00) Midway Islands, Samoa 3 (GMT-10:00) Hawaii 4 (GMT-09:00) Alaska 5 (GMT-08:00) Pacific Time (US & Canada):Tijuana 6 (GMT-07:00) Arizona 7 (GMT-07:00) Mountain time (US & Canada) 8 (GMT-06:00) Central Time (US & Canada) 9 (GMT-06:00) Mexico City, Tegucigalpa 10 (GMT-06:00) Saskatchewan <COMMAND> [N]ext Page [S]et Time Zone [P]revious Page [Q]uit to previous menu Command> Figure 9. Time Zone Configuration Menu Section I: Using the Menus Interface 45

46 Chapter 3: Basic Switch Parameters b. Scroll through the list of time zones until you find one that matches your time zone. c. Type S to choose Set Time Zone. The following message is prompt is displayed: Select time zone> d. Type the number that corresponds to the time zone you want. If you selected a time zone that observes daylight saving time, the following prompt is displayed: Enable or Disable Daylight Saving (E/D)> e. Type D to disable the daylight saving time or E to enable it. Note You must set the time zone in order to display the daylight saving time option. If the time zone you previously selected is located in DST area, you can set this anytime. 46 Section I: Using the Menus Interface

47 AT-S84 Management Software User s Guide Viewing Switch Information To view general information about the switch, perform the following procedure: 1. From the Main Menu, type G to select General Information. The General Information menu is shown in Figure 10. AT-9000/24 Local Management System Main Menu -> General Information System up for : 24min(s), 36sec(s) Runtime Image : Version 1.0 Boot Loader : Version 1.0 Hardware Information Version: DRAM Size: 16MB Fixed Baud Rate: 9600bps Flash Size: 4 MB Administration Information Switch Name: Marketing Switch Location: Fourth Floor Switch Contact: Ralph System Address Information MAC Address: IP Address: Subnet Mask: Gateway: Automatic Network Features DHCP Mode: Disabled 00:06:5H:B2:65:84 Press any key to continue... Figure 10. General Information Menu The General Information Menu displays the following information: System up for The number of hours, minutes, and seconds since the last reset or power cycle. Runtime Image The version of the runtime software. Boot Loader The version of the boot loader software. Section I: Using the Menus Interface 47

48 Chapter 3: Basic Switch Parameters Hardware Information Section Version The hardware version number. Fixed Baud Rate The baud rate of the console port. You cannot change this parameter. DRAM Size The size of the DRAM, in megabytes. Flash Size The size of the flash memory, in megabytes. Administration Information Section Switch Name The name assigned to the switch. To assign the switch a name, refer to Configuring System Administration Information on page 36. Switch Location The location of the switch. To specify the location, refer to Configuring System Administration Information on page 36. Switch Contact The contact person responsible for managing the switch. To specify the name of a contact, refer to Configuring System Administration Information on page 36. System Address Information Section MAC Address The MAC address of the switch. You cannot change this information. System IP Address The IP address of the switch. Refer to Configuring the IP Address, Subnet Mask, and Gateway Address on page 32 to manually assign an IP address or Enabling and Disabling the DHCP Client on page 35 to activate the DHCP client. Subnet Mask The subnet mask for the switch. Refer to Configuring the IP Address, Subnet Mask, and Gateway Address on page 32 to manually assign a subnet mask or Enabling and Disabling the DHCP Client on page 35 to activate the DHCP client. Gateway Default gateway IP address. Refer to Configuring the IP Address, Subnet Mask, and Gateway Address on page 32 to manually assign a gateway address or Enabling and Disabling the DHCP Client on page 35 to activate the DHCP client. 48 Section I: Using the Menus Interface

49 AT-S84 Management Software User s Guide Automatic Network Features Section DHCP Mode The status of the DHCP client on the switch. For information about setting this parameter, refer to Enabling and Disabling the DHCP Client on page Press any key to return to the previous menu. Section I: Using the Menus Interface 49

50 Chapter 3: Basic Switch Parameters Rebooting the Switch This procedure reboots the switch and reloads the AT-S84 management software from flash memory. You might reboot the device if you believe it is experiencing a problem. Rebooting the device does not change any of the device s parameter settings. Caution The switch does not forward network traffic during the reboot process. Some network traffic may be lost. To reboot the switch, perform the following procedure: 1. From the Main Menu type T to select Switch Tools. The Switch Tools Configuration Menu is shown in Figure 11. AT-9000/24 Local Management System Main Menu -> Switch Tools Configuration Menu Software [U]pgrade... [C]onfiguration File Upload/Download... System [R]eboot [P]ing Execution [Q]uit to previous menu Command> Figure 11. Switch Tools Configuration Menu 2. From the Switch Tools Configuration Menu, type R to select System Reboot. 50 Section I: Using the Menus Interface

51 AT-S84 Management Software User s Guide The System Reboot Menu is shown in Figure 12. AT-9000/24 Local Management System Main Menu -> System Reboot Menu Reboot Status: Reboot Type: Stop Normal <COMMAND> Set Reboot [O]ption Start [R]eboot Process [Q]uit to previous menu Command> Figure 12. System Reboot Menu 3. From the System Reboot menu, type O to select Set Reboot Option. The following prompt is displayed: Select reboot option (F/I/N)> 4. Type N to select Normal. This reboot type does not change the current configuration. Note The F and I options are described in Returning the AT-S84 Management Software to the Factory Default Values on page Type R to select Start Reboot Process. The following prompt is displayed: Are you sure you want to reboot the system (Y/N)> 6. Type Y to start the reboot process or N to cancel the reboot. The switch immediately begins to reload the AT-S84 management software. This process takes approximately one minute to complete. You can not manage the device during the reboot. After the reboot is finished, you can log in again if you want to continue to manage the device. Section I: Using the Menus Interface 51

52 Chapter 3: Basic Switch Parameters Pinging a Remote System This procedure instructs the switch to ping a node on your network. This procedure is useful in determining whether an active link exists between the switch and another network device. Note the following before performing the procedure: The switch where you are initiating the ping must have an IP address and subnet mask. The device you are pinging must be a member of the Default VLAN. This means that the port on the switch through which the node is communicating with the switch must be an untagged or tagged member of the Default VLAN. To ping a network device, perform the following procedure: 1. From the Main Menu, type T to select Switch Tools. The Switch Tools Configuration Menu is shown in Figure 11 on page From the Switch Tools Configuration Menu, type P to select Ping Execution. The Ping Execution Menu is shown in Figure 13. AT-9000/24 Local Management System Switch Tools Configuration -> Ping Execution Target IP Address: Number of Requests: 10 Timeout Value (sec): 3 ================Result================= <COMMAND> Set Target [I]P Address [E]xecute Ping Set [N]umber of Requests [S]top Ping Set [T]imeout Value [Q]uit to previous menu Command> Figure 13. Ping Execution Menu 52 Section I: Using the Menus Interface

53 AT-S84 Management Software User s Guide 3. Type I to select Set Target IP Address. The following prompt is displayed: Enter new target IP address> 4. Type the IP address of the node you want the switch to ping and press Enter. 5. Type N to select Set Number of Requests. The following prompt is displayed: Enter new number of requests> 6. Enter the number of ping requests you want the switch to perform. The range is 1 to 10. The default is Type T to select Set Timeout Value. The following prompt is displayed: Enter new timeout value> 8. Enter the length of time in seconds the switch is to wait for a response before assuming that a ping has failed. The range is 1 to 5 seconds. The default is 3 seconds. 9. Type E to select Execute Ping. The following prompt is displayed: Execute ping or Clean ping data (E/C)> 10. Type E to execute the ping or C to clear previous ping data before performing this ping. Section I: Using the Menus Interface 53

54 Chapter 3: Basic Switch Parameters Figure 14 shows an example of the results of a ping. AT-9000/24 Local Management System Switch Tools Configuration -> Ping Execution Target IP Address: Number of Requests: 4 Timeout Value (sec): 3 ================Result================= No ms No ms No ms No ms <COMMAND> Set Target [I]P Address [E]xecute Ping Set [N]umber of Requests [S]top Ping Set [T]imeout Value [Q]uit to previous menu Command> Figure 14. Ping Results 11. To stop the ping, type S to select Stop Ping. 54 Section I: Using the Menus Interface

55 AT-S84 Management Software User s Guide Viewing the System Log The system log displays system-level events in the switch, such as logging in to the management software. To view the system log, perform the following procedure: 1. From the Main Menu, type T to select Switch Tools. The Switch Tools Configuration Menu is shown in Figure 11 on page From the Switch Tools Configuration Menu, type L to select System Log. 3. The System Log Menu is shown in Figure 15. AT-9000/24 Local Management System Switch Tools Configuration -> System Log Menu ID Date Time L Type Description /03/ :30:45 I System Switch start 2 08/03/ :30:46 I Console Login from console 3 08/03/ :30:47 I PCFG Port-3 link-up 4 08/03/ :30:50 I IP DHCP get IP address < > <COMMAND> [C]lear the Log Entries [N]ext Page [P]revious Page [Q]uit to previous menu Command> Figure 15. System Log Menu The System Log Menu contains a table that displays the following information: ID An identifying number for the event. Date and Time The date and time that the event occurred Section I: Using the Menus Interface 55

56 Chapter 3: Basic Switch Parameters L Severity level of the event. The severity levels are: (I)nformation - Useful information that you can ignore during normal operation. (W)arning - An issue that may require a manager s attention. (E)rror - Switch operation is severely impaired. Type The type provides more information about the event. The possible types are: 802.1X - An 802.1X event. CFG - Configuration event. CLI - CLI login. Console - A console login by a user. IP - Change to the IP information. PCFG - Port configuration. PoE - PoE configuration or event. SNTP - SNTP configuration. STP - Spanning tree. SwUpg - Software upgrade. System - General system event. Telnet - Access via Telnet. Description A description of the event. 4. To remove the current log entries, type L to select Clear the Log Entries. 56 Section I: Using the Menus Interface

57 AT-S84 Management Software User s Guide Returning the AT-S84 Management Software to the Factory Default Values This procedure returns all AT-S84 management software parameters to their default values and deletes all tagged and VLANs on the switch. The AT-S84 management software default values are listed in Appendix A, AT-S84 Default Settings on page 319. Caution This procedure causes the switch to reboot. The switch does not forward network traffic during the reboot process. Some network traffic may be lost. To return the AT-S84 management software to the default settings, perform the following procedure: 1. From the Main Menu, type T to select Switch Tools. The Switch Tools Configuration Menu is shown in Figure 11 on page From the Switch Tools Menu, type R to select System Reboot to start the reboot. The System Reboot menu is shown in Figure 12 on page Type O to select Set Reboot Option. The following prompt is displayed: Select reboot option (F/I/N)> 4. Type F or I to select one of the following: F (Factory Default) Resets all switch parameters to the factory default settings, including IP address, subnet mask, and gateway address. I (Reset to Defaults Except IP Address) Resets all switch parameters to the factory default settings, but retains the IP address, subnet mask, and gateway settings. If the DHCP client is enabled, it remains enabled after this reset. Note Option N is described in Rebooting the Switch on page 50. Section I: Using the Menus Interface 57

58 Chapter 3: Basic Switch Parameters 5. Type R to select Start Reboot Process. The following prompt is displayed: Are you sure you want to reboot the system (Y/N)> 6. Type Y to start the reboot process. The switch returns its operating parameters to the default values and begins to reload the AT-S84 management software. This process takes approximately one minute to complete. You can not manage the device during the reboot. After the reboot is finished, you can log in again if you want to continue to manage the device. 58 Section I: Using the Menus Interface

59 Chapter 4 SNMP This chapter contains the following sections: SNMP Overview on page 60 Enabling or Disabling the SNMP Agent on page 62 Enabling Authentication Traps on page 63 Changing the Default SNMP Community Names on page 64 Working with Trap Receivers on page 65 Section I: Using the Menus Interface 59

60 Chapter 4: SNMP SNMP Overview The Simple Network Management Program (SNMP) is another way for you to manage the switch. This type of management involves viewing and changing the management information base (MIB) objects on the device using an SNMP application program. The AT-S84 management software supports SNMPv1 and SNMPv2c which is always disabled on the switch. The procedures in this chapter show you how to create and manage SNMPv1 and SNMPv2c community strings through which your SNMP application program at your management workstation can access the switch s MIB objects. To manage a switch using an SNMP application program, you must do the following: Activate SNMP management on the switch. The default setting for SNMP management is disabled. The procedure for this can be found in Enabling or Disabling the SNMP Agent on page 62. Load the Allied Telesyn MIBs for the switch onto your management workstation containing the SNMP application program. The MIBs are available from the Allied Telesyn web site at To manage a switch using SNMP, you need to know the IP address of the switch and at least one of the switch s community strings. A community string is a string of alphanumeric characters that gives you access to the switch. A community string has several attributes that you can use to control who can use the string and what the string will allow a network manager to do on the switch. The community string attributes are defined below: Community String Name The SNMP community string is similar to a user ID or password, which allows access to a network device s statistics. You must assign a name to the community string. The name can be from one to eight alphanumeric characters. Spaces are allowed. Access Mode This defines what the community string will allow a network manager to do. There are two access modes: Read and Read/Write. A community string with an access mode of Read can only be used to view but not change the MIB objects on a switch. A community string with a Read/Write access can be used to both view the MIB objects and change them. Status A community string can be enabled, disabled, or deleted. When disabled, no one can use it to access the switch. You might disable a community string if you suspect someone is using it for unauthorized access to the 60 Section I: Using the Menus Interface

61 AT-S84 Management Software User s Guide device. You can enable it again later, or even delete it. When a community string is enabled, then it is available for use. Trap Receivers A trap is a signal sent to one or more management workstations by the switch to indicate the occurrence of a particular operating event on the device. There are numerous operating events that can trigger a trap. For instance, resetting the switch or the failure of a cooling fan are two examples of occurrences that cause a switch to send a trap to the management workstations. You can use traps to monitor activities on the switch. Trap receivers are the devices, typically management workstations or servers, that you want to receive the traps sent by the switch. You specify the trap receivers by their IP addresses. You assign the IP addresses to the community strings. Each community string can have up to four trap IP addresses. It does not matter which community strings you assign your trap receivers. When the switch sends a trap, it looks at all the community strings and sends the trap to all trap receivers on all community strings. This is true even for community strings that have a access mode of only Read. If you are not interested in receiving traps, then you do not need to enter any IP addresses of trap receivers. Default SNMP Community Strings The AT-S84 management software provides two default community strings: SNMP Read Community and SNMP Write Community. The read community string is called public and has an access mode of just Read. The write community string is named private and has an access mode of write only. Section I: Using the Menus Interface 61

62 Chapter 4: SNMP Enabling or Disabling the SNMP Agent To disable or enable the SNMP agent, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type U to select User Interface Configuration. The User Interface Configuration Menu is shown in Figure 7 on page From the User Interface Configuration Menu, type S to select Enable/ Disable SNMP Agent. The following prompt is displayed: Enable or Disable SNMP agent (E/D)> 4. Type D to disable the SNMP agent or E to enable it. The default is Enabled. 62 Section I: Using the Menus Interface

63 AT-S84 Management Software User s Guide Enabling Authentication Traps To enable SNMP authentication traps, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration menu, type N to select SNMP Configuration. The SNMP Configuration menu is shown in Figure 16. AT-9000/24 Local Management System Basic Switch Configuration -> SNMP Configuration Menu SNMP Read Community: SNMP Write Community: Trap Authentication: public private Enabled SNMP Trap Receivers: No. Status IP Address Community Deleted <empty> <empty> 2 Enabled Monitor 3 Deleted <empty> <empty> 4 Deleted <empty> <empty> <COMMAND> Set SNMP [R]ead Community [A]dd SNMP Trap Receiver set SNMP [W]rite Community [D]elete SNMP Trap Receiver [M]odify SNMP Trap Receiver [E]nable/Disable Authentication Trap Enable/Disable SNMP [T]rap Receiver [Q]uit to previous menu Command> Figure 16. SNMP Configuration Menu 3. Type E to select Enable/Disable Authentication Trap. The following prompt is displayed: Enable or Disable SNMP Authentication Trap (E/D)> 4. Type E to enable SNMP or D to disable SNMP. The default is Enabled. Section I: Using the Menus Interface 63

64 Chapter 4: SNMP Changing the Default SNMP Community Names To change the names of the default SNMP communities, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration menu, type N to select SNMP Configuration. The SNMP Configuration menu is shown in Figure 16 on page Type R to select Set SNMP Read Community. The following prompt is displayed: Enter read community name> 4. Type the name of the read community. The default is public. 5. Type W to select Set SNMP Write Community. The following prompt is displayed: Enter write community name> 6. Type the name of the write community. The default is private. 64 Section I: Using the Menus Interface

65 AT-S84 Management Software User s Guide Working with Trap Receivers This section contains procedures for working with SNMP trap receivers and includes the following topics: Adding a Trap Receiver, next Enabling or Disabling Trap Receivers on page 65 Modifying a Trap Receiver on page 66 Deleting a Trap Receiver on page 67 Adding a Trap Receiver You must add a trap receiver before you can enable it. To add a trap receiver, perform the following procedure. 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration menu, type N to select SNMP Configuration. The SNMP Configuration menu is shown in Figure 16 on page Type A to select Add SNMP Trap Receiver. The following prompt is displayed: Add SNMP trap receivers->enter entry number> 4. Enter 1 through 4 for the trap receiver you want to configure. The following prompt is displayed: Enter IP address for trap receiver> 5. Enter the IP address of the workstation that you want to receive traps. The following prompt is displayed: Enter community name for trap receiver> 6. Enter a name for the workstation that you want to receive traps. A new trap receiver is automatically enabled. Enabling or Disabling Trap Receivers You can disable a trap receiver or enable one that was previously disabled. To enable or disable a trap receiver, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. Section I: Using the Menus Interface 65

66 Chapter 4: SNMP The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration menu, type N to select SNMP Configuration. The SNMP Configuration menu is shown in Figure 16 on page Type T to select Enable/Disable SNMP Trap Receiver. The following prompt is displayed: Set SNMP trap receivers status->enter entry number> 4. Enter the number of the trap receiver you want to enable or disable. The following prompt is displayed: Set SNMP trap receivers status->enter entry number> 5. Enter the number for the trap you want to enable or disable. The following prompt is displayed: Enable or Disable SNMP Trap Receiver (E/D)> Note The trap receiver must be one whose status is not deleted. 6. Type E to enable the trap receiver or D for disable to disable the trap receiver. You can also delete a trap receiver, as described in Deleting a Trap Receiver on page 67 Modifying a Trap Receiver To modify a trap receiver, perform the following procedure. 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration menu, type N to select SNMP Configuration. The SNMP Configuration menu is shown in Figure 16 on page Type M to select Modify SNMP Trap Receiver. The following prompt is displayed: 66 Section I: Using the Menus Interface

67 AT-S84 Management Software User s Guide Modify SNMP trap receivers->enter entry number> Note The trap receiver must be one whose status is not deleted. 4. Enter the number for the trap you want to modify. The following prompt is displayed: Modify trap receiver entry number (I/C/B)> The options are: I - Modify the IP address of the trap receiver. To modify only the IP address, type I and follow the prompts. C - Modify the community name of the trap receiver. To modify only the community name, type C and follow the prompts. B - Modify both the IP address and community name of the trap receiver. To modify both the IP address and the community name, type B and follow the prompts. Deleting a Trap Receiver When you delete a trap receiver, all the settings are removed from the entry in the table. Instead of deleting a trap receiver, you may want to disable it, as described in Enabling or Disabling Trap Receivers on page 65. To delete a trap receiver, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration menu, type N to select SNMP Configuration. The SNMP Configuration menu is shown in Figure 16 on page Type D to select Delete SNMP Trap Receiver. The following prompt is displayed: Delete SNMP trap receivers->enter entry number> 4. Type the number of the entry you want to delete. Section I: Using the Menus Interface 67

68 Chapter 4: SNMP 68 Section I: Using the Menus Interface

69 Chapter 5 Port Configuration This chapter contains the procedures for viewing and adjusting the parameter settings for the ports on the switch. This chapter contains the following sections: Displaying the Port Parameters on page 70 Enabling or Disabling a Port on page 72 Setting a Port s Speed and Duplex Mode on page 73 Changing the Flow Control Setting on page 75 Changing the Back Pressure Setting on page 76 Displaying Port Statistics on page 77 Section I: Using the Menus Interface 69

70 Chapter 5: Port Configuration Displaying the Port Parameters To display the parameter settings for the ports on the switch, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type P to select Port Configuration. The Port Configuration Menu is shown in Figure 17. AT-9000/24 Local Management System Basic Switch Configuration -> Port Configuration Menu Back Pressure: Disabled Port Trunk Type Link Status Mode Flow Ctrl TX Up Enabled Auto Enabled TX Up Enabled Auto Enabled TX Up Enabled Auto Enabled TX Up Enabled Auto Enabled TX Up Enabled Auto Enabled TX Down Enabled Auto Enabled TX Up Enabled Auto Enabled TX Down Enabled Auto Enabled TX Up Enabled Auto Enabled TX Up Enabled Auto Enabled TX Up Enabled Auto Enabled TX Up Enabled Auto Enabled <COMMAND> [N]ext Page Set [S]tatus Set [F]low Control [P]revious Page Set [M]ode Set [B]ack Pressure [Q]uit to previous menu Command> Figure 17. Port Configuration Menu 70 Section I: Using the Menus Interface

71 AT-S84 Management Software User s Guide The Port Configuration Menu displays the following columns of information about the status of the first 12 ports on the switch: Port The port number. Trunk The trunk group number. This column contains the number of the port trunk if the port is a member of a trunk. To configure a trunk, refer to Chapter 6, Port Trunking on page 81. Type The port type. The type for an RJ-45 copper port is 10/100/1000Base- T. Link The status of the link between the port and the end node connected to the port. The possible values are: Up - A link exists between the port and the end node. Down - The port has not established a link with an end node. Status The current operating status of the port. The possible values are: Enabled - The port is able to send and receive Ethernet frames. This is the default setting for all ports on the switch. Disabled - The port has been manually disabled. To change a port s status, see Enabling or Disabling a Port on page 72. Mode The port s speed and duplex mode setting. For information about the modes or to change a port s speed and duplex mode setting, see Setting a Port s Speed and Duplex Mode on page 73. Flow Ctrl Whether flow control is enabled on the port. Flow control is enabled by default. To disable flow control, refer to Changing the Flow Control Setting on page To view information for the rest of the ports, type N for Next. Section I: Using the Menus Interface 71

72 Chapter 5: Port Configuration Enabling or Disabling a Port This procedure enables or disables a port. You may want to disable a port and prevent packets from being forwarded if a problem occurs with the node or cable connected to the port. After the problem has been fixed, you can enable the port to resume normal operation. You can also disable an unused port to secure it from unauthorized connections. The default setting for a port is enabled. To change the port s status, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type P to select Port Configuration. The Port Configuration Menu is shown in Figure 17 on page Type S to select Set Status. The following prompt is displayed: Set Status->Enter port number> 4. Enter the number of the port you want to enable or disable. You can configure only one port at a time. The following prompt is displayed: Enable or Disable port n (E/D)> 5. Type E to enable the port or D to disable it. The default is enabled. A disabled port immediately stops forwarding all ingress and egress traffic until you enable it again. The display is refreshed to show the port s new status. 72 Section I: Using the Menus Interface

73 AT-S84 Management Software User s Guide Setting a Port s Speed and Duplex Mode To change a port s speed or duplex mode, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type P to select Port Configuration. The Port Configuration Menu is shown in Figure 17 on page Type M to select Set Mode. The following prompt is displayed: Set Mode -> Enter port number > 4. Enter the number of the port whose speed or duplex mode you want to change. You can configure only one port at a time. The following prompt is displayed: Enter new mode for port n (a/h/h/f/f/t)> 5. Enter the letter that corresponds to the desired speed and duplex mode setting for the port. The port settings are: a - Auto: The port uses Auto-Negotiation to set its speed and duplex mode. This is the default setting for all ports. h - 10 Mbps, half-duplex H Mbps, half-duplex f - 10 Mbps, full-duplex F Mbps, full-duplex T Mbps, full-duplex When you select a setting, note the following: When a twisted pair port on the switch is set to Auto-Negotiation, the default setting, the end node should also be using Auto- Negotiation to prevent a duplex mode mismatch. A switch port using Auto-Negotiation defaults to half-duplex if it detects that the end node is not using Auto-Negotiation. This can result in a mismatch if the end node is operating at a fixed duplex mode of full-duplex. To avoid this problem when connecting an end node Section I: Using the Menus Interface 73

74 Chapter 5: Port Configuration with a fixed duplex mode of full-duplex to a switch port, disable Auto-Negotiation on the port and set the port s speed and duplex mode manually. 74 Section I: Using the Menus Interface

75 AT-S84 Management Software User s Guide Changing the Flow Control Setting A switch port uses flow control to control the flow of ingress packets from its end node. Flow control applies to ports operating in full-duplex mode. A switch port uses flow control to control the flow of ingress packets from its end node. A port using flow control issues a special frame, referred to as a PAUSE frame, as specified in the IEEE 802.3x standard, to stop the transmission of data from an end node. When a port needs to stop an end node from transmitting data, it issues this frame. The frame instructs the end node to cease transmission. The port continues to issue PAUSE frames until it is ready again to receive data from the end node. The default setting for flow control on a switch port is disabled. To change the flow control setting on a port, perform the following procedure: 1. From the Main Menu, type B to select Basic Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type P to select Port Configuration. The Port Configuration Menu is shown in Figure 17 on page Type F to select Flow Control. The following prompt is displayed: Set Flow Control -> Enter port number > 4. Enter the port number whose flow control setting you want to change. You can configure only one port at a time. The following prompt is displayed: Enable or Disable flow control for port n (E/D)> 5. Type E to enable flow control or D to disable it. The default is enabled. The display is refreshed to show the port s new flow control setting. Section I: Using the Menus Interface 75

76 Chapter 5: Port Configuration Changing the Back Pressure Setting Back pressure performs much the same function as flow control. Both are used by a port to control the flow of ingress packets. Flow control applies to ports operating in full-duplex; back pressure applies to ports operating in half-duplex mode. When a twisted pair port on the switch operating in half-duplex mode needs to stop an end node from transmitting data, it forces a collision. A collision on an Ethernet network occurs when two end nodes attempt to transmit data using the same data link at the same time. A collision causes the end nodes to stop sending data. When a switch port needs to stop a half-duplex end node from transmitting data, it forces a collision on the data link, which stops the end node. After the switch is ready to receive data again, the switch stops forcing collisions. This is called back pressure. To apply back pressure to a port, perform the following procedure: 1. From the Main Menu, type B to select Basic Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type P to select Port Configuration. The Port Configuration Menu is shown in Figure 17 on page Type B to select Back Pressure. The following prompt is displayed: Enable or Disable all link up ports (E/D)> 4. Type E to enable back pressure or D to disable it. The default is disabled. 76 Section I: Using the Menus Interface

77 AT-S84 Management Software User s Guide Displaying Port Statistics To display statistics about a port, perform the following procedure: 1. From the Main Menu, select Statistics. The Statistics menu is shown in Figure 18. AT-9000/24 Local Management System Main Menu -> Statistics Menu Port: 1 Elapsed Time Since System Up: <Counter Name <Total <Avg./s> Total RX Bytes Total RX Pkts Good Broadcast Good Multicast CRC/Align Errors 0 0 Undersize Pkts 0 0 Oversize Pkts 0 0 Fragments 0 0 Jabbers 0 0 Collisions Byte Pkts Pkts Pkts Pkts Pkts Pkts <COMMAND> [S]elect/[N]ext/[P]rev. Port Since [R]eset S[t]op Refresh [Q]uit Command> Figure 18. Statistics Menu The statistics for port 1 are displayed in a table that contains the following columns of information: Total The total count for this statistic. Avg/s The average count of that statistic per second. The table contains the following items of information: Total RX Bytes Number of bytes received on the port. Total RX Pkts Number of packets received on the port. Section I: Using the Menus Interface 77

78 Chapter 5: Port Configuration Good Broadcast Number of valid broadcast packets received on the port. Good Multicast Number of valid multicast packets received on the port. CRC/Align Errors Number of packets with a cyclic redundancy check (CRC) error but with the proper length ( bytes) received on the port. Undersize Pkts Number of packets that were less than the minimum length specified by IEEE (64 bytes including the CRC) received on the port. Oversize Pkts Number of packets that exceeded the maximum length specified by IEEE (1518 bytes including the CRC) received on the port. Fragments Number of undersized packets, packets with alignment errors, and packets with FCS errors (CRC errors) received on the port. Jabbers Number of electrical signal errors detected on the port. Collisions Number of packet collisions on the port. 64-Byte Pkts Number of 64-byte packets sent or received by the port. The minimum length of an Ethernet packet is 64 bytes Pkts Number of 65- to 127-byte packets sent or received by the port Pkts Number of 128- to 255-byte packets sent or received by the port Pkts Number of 256- to 511-byte packets sent or received by the port Pkts Number of 512- to 1023-byte packets sent or received by the port Pkts Number of to 1522-byte packets sent or received by the port. The maximum length of an Ethernet packet is 1518 bytes. The statistics are refreshed every 30 seconds, 2. To select a specific port: a. Type S to select Select. 78 Section I: Using the Menus Interface

79 AT-S84 Management Software User s Guide The following prompt is displayed: Select port number> b. Type the number of the port whose statistics you want to view. 3. Type N for Next or P for Previous to move between ports. 4. To view the statistics for a particular port since the switch was last reset, select the port and then type R for Since Reset. 5. To stop refreshing the statistics, type T for Stop Refresh. Section I: Using the Menus Interface 79

80 Chapter 5: Port Configuration 80 Section I: Using the Menus Interface

81 Chapter 6 Port Trunking This chapter provides information and procedures for creating a port trunk and contains the following sections: Port Trunking Overview on page 82 LACP Trunks on page 84 Setting Up a Port Trunk on page 88 Setting Up an LACP Trunk on page 92 Section I: Using the Menus Interface 81

82 24 Port Gigabit Ethernet Switch POWER R 23R R 24R 24 Port Gigabit Ethernet Switch POWER R 23R R 24R PORT ACTIVITY /100 LINK SFP ACT PORT ACTIVITY /100 LINK SFP ACT Chapter 6: Port Trunking Port Trunking Overview Port trunking is an economical way for you to increase the bandwidth between two Ethernet switches. A port trunk is 2 to 8 ports that have been grouped together to function as one logical path. A port trunk increases the bandwidth between switches and is useful in situations where a single physical data link between switches is insufficient to handle the traffic load. A port trunk always sends packets from a particular source to a particular destination over the same link within the trunk. A single link is designated for flooding broadcasts and packets of unknown destination. Static Port Trunk Overview A static port trunk consists of two to eight ports on the switch that function as a single virtual link between the switch and another device. A static port trunk improves performance by distributing the traffic across multiple ports between the devices and enhances reliability by reducing the reliance on a single physical link. A static trunk is easy to configure. You designate the ports on the switch that are to be in the trunk and the management software on the switch automatically groups them together. The example in Figure 19 illustrates a static port trunk of four links between two AT-9000/24 Gigabit Ethernet switches. AT-9000/ AT-9000/ Figure 19. Static Port Trunk Example Network equipment vendors tend to employ different techniques to implement static trunks. Consequently, a static trunk on one device might not be compatible with the same feature on a device from a different manufacturer. For this reason static trunks are typically employed only between devices from the same vendor. That is not to say that an Allied Telesis layer 2 managed switch cannot form a static trunk with a device from another manufacturer; but there is the possibility that the implementations of static trunking on the two devices might not be 82 Section I: Using the Menus Interface

83 AT-S84 Management Software User s Guide compatible. Also note that a static trunk does not provide for redundancy or link backup. If a port in a static trunk loses its link, the trunk s total bandwidth is diminished. Though the traffic carried by the lost link is shifted to one of the remaining ports in the trunk, the bandwidth remains reduced until the lost link is reestablished or you reconfigure the trunk by adding another port to it. Port Trunking Guidelines Observe the following guidelines when you create a port trunk: A port trunk can consist of up to 8 ports, but must have a minimum of 2 ports. The switch can support up to 4 trunks at a time. A port can belong to only one trunk at a time. The speed, duplex mode, and flow control settings must be the same on all the ports in a trunk. The ports of a trunk must be members of the same VLAN. A port trunk cannot consist of ports from different VLANs. The ports of a trunk do not have to be consecutive. When you cable a trunk, the order of the connection should be maintained on both nodes. The lowest numbered port in a trunk on the switch should be connected to the lowest numbered port of the trunk on the other device, the next lowest numbered port on the switch should be connected to the next lowest numbered port on the other device, and so on. For example, assume that you are connecting a trunk between two AT-9000/24 Gigabit Ethernet switches. On the first switch, you select ports 1 through 4 for a trunk. On the second switch, you select ports 5 through 8. To maintain the order of the port connections, connect port 1 on the first switch to port 5 on the second switch, connect port 2 to port 6, and so on. To avoid compatibility problems, Allied Telesyn recommends creating a port trunk only between AT-9000/24 Gigabit Ethernet switches. A port trunk between an AT-9000/24 Gigabit Ethernet switch and a device from another manufacturer might result in undesirable trunk behavior. Section I: Using the Menus Interface 83

84 24 Port Gigabit Ethernet Switch POWER R 23R R 24R 24 Port Gigabit Ethernet Switch POWER R 23R R 24R PORT ACTIVITY /100 LINK SFP ACT PORT ACTIVITY /100 LINK SFP ACT Chapter 6: Port Trunking LACP Trunks An LACP (Link Aggregation Control Protocol) trunk is another type of port trunk. It performs the same function as a static trunk. It increases the bandwidth between two network devices by distributing the traffic load over multiple physical links. The advantage of an LACP trunk over a static port trunk is its flexibility. While implementations of static trunking tend to be vendor specific, the AT-S84 implementation of LACP is compliant with the IEEE 802.3ad standard. This makes it interoperable with equipment from other vendors that also comply with the standard. Therefore, you can create a trunk between an Allied Telesyn device and networking devices from other manufacturers. Another advantage is that ports in an LACP trunk can function in a standby mode. This adds redundancy and resiliency to the trunk. If a link in a static trunk goes down, the overall bandwidth of the trunk is reduced and restoring it requires reestablishing the link or manually modifying the trunk by adding another port to it. In contrast, an LACP trunk can activate ports in a standby mode when an active link fails. The automatic activation of standby ports allows the switch to maintain the maximum possible bandwidth of the trunk. For example, assume you create an LACP trunk of ports 11 to 18 on a switch and the switch is using ports 11 to 16 as the active ports and ports 17 and 18 as reserve. If an active port loses its link, the switch automatically activates one of the two reserve ports to maintain maximum bandwidth of the trunk. Figure 20 illustrates this example. AT-9000/24 Active Ports Reserve Ports 17, 18 AT-9000/ Figure 20. LACP Trunk Example LACP Trunk Status The AT-9000/24 Gigabit Ethernet switch can have up to four trunks. A maximum of eight ports of each trunk can be assigned by the switch administrator. You can configure each trunk s status as Active, Passive, Manual, or Disabled. 84 Section I: Using the Menus Interface

85 AT-S84 Management Software User s Guide When a trunk is created, its default status is Disabled. This means that the trunk does not pass network traffic or send/receive LACP data units (LACPDU) until the trunk status is changed accordingly. When a trunk is set to Active status, the trunk ports are all available as part of the active LACP trunk. The trunk ports of an active trunk will all send and receive LACPDUs. A minimum number of trunk ports determined by the bandwidth requirements of the network traffic will pass network traffic. Additional ports within an active trunk will dynamically be added or deleted by the LACP feature depending on the increase or decrease of the network traffic. When a trunk is set to Passive status, the trunk ports are available to be activated by their link partners. If the trunk receives LACP data unit packets from an Active link partner, it automatically transitions to an Active status. The trunk ports will not transmit LACP data units unless the link partners are in the Active status. A trunk set to Manual status is effectively a static trunk and has none of the benefits of the LACP feature. The trunk ports of an active trunk will not send or receive LACPDUs. The switch administrator must manually add or delete trunk ports from a trunk. LACP Port Priority Parameter The switch uses this parameter to determine which ports are to be active and which are to be in the standby mode in situations where the number of ports in the aggregate trunk exceeds the highest allowed number of active ports. This parameter can be adjusted on each port and is a number from 1 to 255. The lower the number, the higher the priority. Ports with the highest priorities are designated as the active ports in an aggregate trunk. For example, if both 802.3ad-compliant devices support up to four active ports and there are a total of eight ports in the trunk, the four ports with the lowest priority settings are designated as the active ports, and the others are placed in standby mode. If an active link goes down on a active port, the standby port with the highest priority is automatically activated to take its place. The default value of a port s priority number is equal to 1. The selection of the active links in an aggregate trunk is dynamic. It changes as links are added, removed, lost or reestablished. For example, if an active port loses its link and is replaced by another port in the standby mode, the reestablishment of the link on the originally active port causes it to return to the active state by virtue of its having a higher priority, while the port that replaced it is returned to the standby mode. In the unusual event that you set this parameter to the same value for some or all of the ports of an aggregate trunk, the selection of active ports is based on port numbering. The lower the port number, the higher the priority. Section I: Using the Menus Interface 85

86 Chapter 6: Port Trunking Two conditions must be met in order for a port that is a member of an aggregate trunk to function in the standby mode. First, the number of ports in the trunk must exceed the highest allowed number of active ports and, second, the port must be receiving LACPDU packets from the other device. A port functioning in the standby mode does not forward network traffic, but it does continue to send LACPDU packets. If a port that is part of a trunk group does not receive LACPDU packets, it functions as a normal Ethernet port and forwards network packets along with LACPDU packets. LACP Trunk Guidelines Following are the guidelines for creating aggregators: LACP must be activated on both the switch and the other device. The other device must be 802.3ad-compliant. The AT-9000/24 Gigabit Ethernet switch supports up to eight active ports in a trunk group at a time. The switch supports a maximum of four trunks. The ports of a trunk group must be of the same medium type: all twisted pair ports or all fiber optic ports. The ports of a trunk can be consecutive (for example ports 5-9) or nonconsecutive (for example, ports 4, 8, 11, 20). A port can belong to only one trunk group at a time. The ports of an trunk group must be untagged members of the same VLAN. An LACP trunk does not forward VLAN ID information. 10/100Base-TX twisted pair ports must be set to Auto-Negotiation or 100 Mbps, full-duplex mode. LACP trunking is not supported in halfduplex mode. 100Base-FX fiber optic ports must be set to full-duplex mode. You can create a trunk group that includes transceivers with 1000Base-X fiber optic ports. Only those ports that are members of a trunk group transmit LACPDU packets. A port that is a member of a trunk group functions as part of an aggregate trunk only if it receives LACPDU packets from the remote device. If it does not receive LACPDU packets, it functions as a regular Ethernet port, forwarding network traffic while also continuing to transmit LACPDU packets. The port with the highest priority in a trunk group carries broadcast packets and packets with an unknown destination. For background information, refer to LACP Port Priority Parameter on page 85. Prior to creating a trunk group between an AT-9000/24 Gigabit Ethernet switch and another vendor s device, refer to the vendor s documentation to determine the maximum number of active ports the 86 Section I: Using the Menus Interface

87 AT-S84 Management Software User s Guide device can support in a trunk. If the number is less than eight, the maximum number for the AT-9000/24 Gigabit Ethernet switch, you should probably assign a higher system LACP priority to the other vendor s switch. If it is more than eight, assign the higher priority to the AT-9000/24 Gigabit Ethernet switch. This can avoid a possible conflict between the devices if some ports are placed in the standby mode when the devices create the trunk. For background information, refer to LACP Port Priority Parameter on page 85. LACPDU packets are transmitted as untagged packets. Section I: Using the Menus Interface 87

88 Chapter 6: Port Trunking Setting Up a Port Trunk This section contains the following procedures for working with port trunks: Creating a Port Trunk, next Modifying a Port Trunk on page 90 Enabling or Disabling a Port Trunk on page 91 Creating a Port Trunk This procedure explains how to create a port trunk. Caution Do not connect the cables to the ports on the switches until after you have configured the trunk with the management software. Connecting the cables before configuring the software creates a loop in your network topology, which can result in broadcast storms and poor network performance. To create a port trunk, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21. AT-9000/24 Local Management System Main Menu -> Advanced Switch Configuration Menu [V]LAN Management [T]runk Configuration [I]GMP Snooping Configuration Quality of [S]ervice Configuration Port [M]irroring Configuration 802.x[X] Port Based Access Control Configuration [Q]uit to previous menu Command> Figure 21. Advanced Switch Configuration Menu 2. From the Advanced Switch Configuration Menu, type T to select Trunk Configuration. 88 Section I: Using the Menus Interface

89 AT-S84 Management Software User s Guide The Trunk Configuration Menu is shown in Figure 22. AT-9000/24 Local Management System Advanced Switch Configuration -> Trunk Configuration Menu Group Status Port Members Trunk ID Disabled 1 2 Disabled 2 3 Disabled 3 4 Disabled <COMMAND> [A]dd Trunk Member LACP [G]roup Status [R]emove Trunk Member Set P[o]rt Priority [S]et Trunk Status [Q]uit to previous menu Command> Figure 22. Trunk Configuration Menu 3. To add a trunk member, type A to select Add Trunk Member. The following prompt is displayed: Enter trunk group number> 4. Select a trunk group number from 1 to 4 and press Enter. The following prompt is displayed: Enter port members (from 1 to 24, up to 8 ports) for trunk n > 5. Enter the ports you want to include in the trunk and press Enter. You can specify the ports individually separated by commas (for example, 1,2,5), as a range of ports separated by a hyphen (for example, 2-4), or both (for example, 1,3, 12-16). 6. To set the trunk status, type S to select Set Trunk Status. The following prompt is displayed: Enter trunk group number> 7. Type the trunk group number and press Enter. The following prompt is displayed: Set trunk group n status (A/P/M/D)> Section I: Using the Menus Interface 89

90 Chapter 6: Port Trunking 8. Type M to select Manual Trunk for a basic trunk without LACP handling. The A and P options apply to LACP trunks. See Setting Up an LACP Trunk on page 92 for more information. The trunk is now operational on the switch. 9. Configure the port trunk on the other switch and connect the cables. Modifying a Port Trunk This procedure adds and removes ports from a port trunk. Note Disconnect the cables from the ports of the trunk on the switch before modifying it. Adding or removing ports from a trunk without first disconnecting the cables can create loops in your network topology, which can cause broadcast storms and poor network performance. To add or remove ports from a trunk, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type T to select Trunk Configuration. The Trunk Configuration Menu is shown in Figure 22 on page To add ports to a port trunk, type A to select Add Trunk Member. To remove ports, type R to select Remove Trunk Member. The following prompt is displayed: Enter trunk group number> 4. Type the number of the trunk group you want to modify and press Enter. The following prompt is displayed: Enter port members (up to 8 ports) for trunk n> 5. Enter the ports you want to add or remove from the trunk and press Enter. 90 Section I: Using the Menus Interface

91 AT-S84 Management Software User s Guide You can specify the ports individually, separated by commas (for example, 1,2,5), as a range of ports separated by a hyphen (for example, 2-4), or both (for example, 1,3, 6-8). 6. Modify the port trunk on the other switch and reconnect the cables. Enabling or Disabling a Port Trunk This procedure enables and disables a port trunk. Note the following before performing this procedure: Do not enable a port trunk until after you have configured the trunk on both switches. Do not connect the cables to the ports on the switches until after you have configured and enabled the trunk on both switches. Note If you are disabling a port trunk, be sure to first disconnect all cables from the ports of the trunk. Leaving the cables connected can create loops in your network topology because the ports of a disabled port trunk function as normal network ports, forwarding individual network traffic. To enable or disable a port trunk, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type T to select Trunk Configuration. The Trunk Configuration Menu is shown in Figure 22 on page From the Trunk Configuration Menu, type S to select Set Trunk Status. The following prompt is displayed: Enter trunk group number> 4. Type the number of the trunk group you want to enable or disable and press Enter. The following prompt is displayed: Set trunk group n status (A/P/M/D)> 5. Type M to enable a manual trunk, or D to disable the trunk. Section I: Using the Menus Interface 91

92 Chapter 6: Port Trunking Setting Up an LACP Trunk This section contains the following procedures to work with LACP trunks: Creating an LACP Trunk, next Configuring the LACP Port Priority on page 93 Verifying the LACP Group Settings on page 94 Disabling an LACP Trunk on page 95 Creating an LACP Trunk To create an LACP trunk, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type T to select Trunk Configuration. The Trunk Configuration Menu is shown in Figure 22 on page To set the trunk status, type S to select Set Trunk Status. The following prompt is displayed: Enter trunk group number> 4. Type the trunk group number and press Enter. The following prompt is displayed: Set trunk group n status (A/P/M/D)> 5. Choose one of the four following settings: A - LACP Active: Ports are in an active negotiation state. P - LACP Passive: Ports are in a passive state where the port negotiates a bundle by exchanging LACP packets to the peer only if the far end initiates it. M - Manual: Ports are in a static trunk state. D - Disabled: Ports are disabled and do not sent or received LACP data units or network traffic. Note LACP must be enabled at both ends of the link to be operational. 92 Section I: Using the Menus Interface

93 AT-S84 Management Software User s Guide Configuring the LACP Port Priority The switch uses the port priority to determine which ports are to be active and which are to be in standby mode in situations where the number of ports in the aggregate trunk exceeds the highest allowed number of active ports. The port with the lowest numerical value has the highest priority. To configure the LACP port priority, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type T to select Trunk Configuration. The Trunk Configuration Menu is shown in Figure 22 on page From the Trunk Configuration Menu, type O to select Set Port Priority The LACP Port Priority Menu is shown in Figure 23. AT-9000/24 Local Management System Trunk Configuration -> LACP Port Priority Menu Port Priority <COMMAND> [S]et Port Priority [N]ext Page [P]revious Page [Q]uit to previous menu Command> Figure 23. LACP Port Priority Menu 4. From the LACP Port Priority Menu, type S to select Set Port Priority. The following prompt is displayed: Section I: Using the Menus Interface 93

94 Chapter 6: Port Trunking Enter port no> 5. Type the number of the port whose priority you want to set. The following prompt is displayed: Enter port priority> 6. Enter a number for the priority of the port. The range is 1 to 255, and the default is 1. Verifying the LACP Group Settings To view the LACP group settings, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type T to select Trunk Configuration. The Trunk Configuration Menu is shown in Figure 22 on page From the Trunk Configuration Menu, type G to select LACP Group Status. The following prompt is displayed: Enter trunk group admin key> 4. Type a number from 1 to 4 to specify the admin key of the trunk you want to view. 94 Section I: Using the Menus Interface

95 AT-S84 Management Software User s Guide The LACP Group Status Menu is displayed, as shown in Figure 24. AT-9000/24 Local Management System Trunk Configuration -> LACP Group Status Menu System Priority : System ID : 00:00:90:24:00:03 Key : 1 Aggregator Attached Port List <COMMAND> [Q]uit to previous menu Command> Figure 24. LACP Group Status Menu The LACP Group Status Menu displays the following information about the LACP group: System Priority The system priority as defined by IEE 802.3ad. You cannot change this. System ID The MAC address of the system. Key The key for this trunk group. The menu also contains a table that displays the following information: Aggregator The port that is operating as the aggregator. Attached Port List The ports assigned to the aggregator. Disabling an LACP Trunk To disable an LACP trunk, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page 88. Section I: Using the Menus Interface 95

96 Chapter 6: Port Trunking 2. From the Advanced Switch Configuration Menu, type T to select Trunk Configuration. The Trunk Configuration Menu is shown in Figure 22 on page From the Trunk Configuration Menu, type S to select Set Trunk Status. The following prompt is displayed: Enter trunk group number> 4. Enter the trunk group number. The following prompt is displayed: Set trunk group n status (A/P/M/D)> 5. Type D to select Disabled. 96 Section I: Using the Menus Interface

97 Chapter 7 Port Mirroring This chapter contains the procedure for setting up port mirroring. Port mirroring allows you to unobtrusively monitor the ingress and egress traffic on a port by having the traffic copied to another port. This chapter contains the following sections: Port Mirroring Overview on page 98 Configuring Port Mirroring on page 99 Enabling or Disabling Port Mirroring on page 101 Section I: Using the Menus Interface 97

98 Chapter 7: Port Mirroring Port Mirroring Overview The port mirroring feature allows you to unobtrusively monitor the ingress and egress traffic on a port on the switch by having the traffic copied to another switch port. By connecting a network analyzer to the port where the traffic is being copied to, you can monitor the traffic on the other port without impacting its performance or speed. The port whose traffic you want to mirror is called the mirrored port. The port where the traffic will be copied to is called the mirroring port. Observe the following guidelines when using this feature: You can mirror only one port at a time. The mirrored and mirroring ports must be on the same switch. This feature copies both the ingress and egress traffic of the mirrored port. The mirroring port cannot be used for normal Ethernet switching. 98 Section I: Using the Menus Interface

99 AT-S84 Management Software User s Guide Configuring Port Mirroring To set up port mirroring, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type M to select Port Mirroring Configuration. The Port Mirroring Configuration Menu is shown in Figure 25. AT-9000/24 Local Management System Advanced Switch Configuration -> Port Mirroring Configuration Menu Mirroring Port Mirrored Port Status Disabled <COMMAND> [S]et Mirroring Port Set [M]irrored Port [E]nable/Disable Port Mirroring [Q]uit to previous menu Command> Figure 25. Port Mirroring Menu 3. Type S to select Set Mirroring Port. The following prompt is displayed: Set monitoring port-> Enter port number> 4. Type the number of the port where the network analyzer is connected and press Enter. You can specify only one port. 5. Type M to select Set Mirrored Port. The following prompt is displayed: Set monitored port-> Enter port number> 6. Type the number of the port whose ingress and egress traffic you want to monitor and press Enter. You can specify only one port. Section I: Using the Menus Interface 99

100 Chapter 7: Port Mirroring 7. Type E to select Enable/Disable Port Mirroring. The following prompt is displayed: Enable or Disable monitoring (E/D)> 8. Type E to enable port mirroring. You can now connect your data analyzer to the mirroring port. 100 Section I: Using the Menus Interface

101 AT-S84 Management Software User s Guide Enabling or Disabling Port Mirroring To enable or disable port mirroring, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type M to select Port Mirroring Configuration. The Port Mirroring Menu is shown in Figure 25 on page Type E to select Enable/Disable Port Mirroring. The following prompt is displayed: Enable or Disable monitoring (E/D)> 4. Type E to disable port mirroring or D to disable port mirroring. Port mirroring is disabled by default. When you disable port mirroring, the port that was functioning as the mirroring port can then be used as a normal networking port. Section I: Using the Menus Interface 101

102 Chapter 7: Port Mirroring 102 Section I: Using the Menus Interface

103 Chapter 8 Virtual LANs and GVRP This chapter contains the procedures for creating, modifying, and deleting and tagged Virtual Local Area Networks (VLANs). This chapter contains the following sections: VLAN Features on page 104 VLAN Overview on page 106 Working with VLANS on page 113 GVRP on page 122 Section I: Using the Menus Interface 103

104 Chapter 8: Virtual LANs and GVRP VLAN Features A Virtual Local Area Network (VLAN) is a logical grouping of devices on different physical LAN segments that allows users to communicate as if they were physically connected to a single LAN, independent of the physical configuration of the network. With VLANs, you can segment your network and group end-nodes with related functions into their own separate, logical LAN segments. For example, the marketing personnel in your company may be spread throughout a building. Assigning marketing to a single VLAN allows marketing personnel to share resources and bandwidth as if they were connected to the same segment. The resources of other departments can be visible to the marketing VLAN members, accessible, or accessible only to specified individuals. A few benefits of a VLAN architecture are described in the following sections. Increased Performance Improved Manageability In traditional Layer 2 switched networks, broadcast packets are sent to each and every individual port. Grouping users into logical networks limits broadcast traffic to users performing similar functions or users within individual workgroups. High traffic, the danger of broadcast storms, router latency, and data collisions are significantly reduced, and the efficiency of the entire network is improved. VLANs provide a fundamental improvement in the design, administration, and management of LANs. Before VLANs, physical changes to a network were made at the switch in the wiring closet. For example, if an employee transferred to a new department, changing that employee s LAN segment assignment often required a physical wiring change at the switch. As a software-base solution, VLANs eliminate the restriction of existing network design and cabling infrastructure and allow the centralized configuration of switches located in many different locations. VLAN memberships are changed quickly and efficiently from the management console rather than in a wiring closet. Increased Security VLANs provide additional security not available in a shared media network environment. Because a switched network only delivers frames to intended recipients, and only broadcast frames to other members of the VLAN, a network administrator can segment users requiring access to sensitive information into separate VLANs from the rest of the general user community. 104 Section I: Using the Menus Interface

105 AT-S84 Management Software User s Guide VLANs can be used to control the flow of data in your network, since the traffic generated by an end-node in a VLAN is restricted to the other endnodes in the same VLAN. In addition, VLANs can prevent data from flowing to unauthorized end-nodes Section I: Using the Menus Interface 105

106 Chapter 8: Virtual LANs and GVRP VLAN Overview This VLAN overview contains the following sections: VLAN Name, next VLAN Identifier on page 106 VLAN Port Members on page 106 Port VLAN Identifier on page 106 Incoming and Outgoing Tagged and Untagged Frames on page 107 Guidelines for Creating a VLAN on page 108 VLAN Name VLAN Identifier To create a port-based VLAN, you must give it a name. The name should reflect the function of the network devices that are be members of the VLAN. Examples include Sales, Production, and Engineering. Every VLAN in a network must have a unique number assigned to it. This number is called the VLAN identifier (VID). This number uniquely identifies a VLAN in the switch and the network. The factory VID is 1 for all ports. If a VLAN consists only of ports located on one physical switch in your network, you assign it a VID different from all other VLANs in your network. If a VLAN spans multiple switches, then the VID for the VLAN on the different switches should be the same. The switches are then able to recognize and forward frames belonging to the same VLAN even though the VLAN spans multiple switches. For example, if you had a VLAN titled Marketing that spanned three AT-9000/24 Gigabit Ethernet switches, you would assign the Marketing VLAN on each switch the same VID. Port VLAN Identifier VLAN Port Members The Port VLAN Identifier (PVID) is the VLAN identifier associated with a specific port. The PVID provides a VLAN assignment for each untagged frame received by the switch. (See Incoming and Outgoing Tagged and Untagged Frames on page 107.) The switch internally associates the untagged frame with the VID that is equal to the PVID. The switch then forwards this frame to one of the other member ports of that VLAN. The default PVID value is 1. You need to specify which ports on the switch are to be members of a VLAN. A port can be specified as a member of one or more VLANs up to 255, the maximum number of VLANs supported by the switch. The factory default VID is 1. Therefore, each port is initially configured to be a member of VLAN 1, which is known as the default VLAN. 106 Section I: Using the Menus Interface

107 AT-S84 Management Software User s Guide Note The switch is preconfigured with the Default_VLAN only. All ports on the switch are initially members of the Default_VLAN. If a port is assigned to be a new member of a VLAN, its membership can be defined as either tagged or untagged. Tagged Port Members A port is a tagged member of a VLAN when the PVID does not equal the VID. In this case, the port must be a member of two or more VLANs. If a port is a tagged member of one VLAN, then the same port is also an untagged member of another VLAN where the PVID matches its VID. Untagged Port Members A port is an untagged member of a VLAN if the PVID is equal to the VID of that VLAN. A port can be an untagged member of only one VLAN. An example of this is the Default_VLAN configuration where all ports are initially configured to be untagged members of VLAN 1 only. A port can be an untagged member of one VLAN and be a tagged member of one or more VLANS at the same time. (See Figure 27 on page 111.) Incoming and Outgoing Tagged and Untagged Frames The VLAN information within an Ethernet frame is referred to as a tag or tagged header. An Ethernet frame can contain VLAN information within its header. Likewise, a frame that does not contain this VLAN tag information is referred to as an untagged or standard frame. A tag contains the VID information of the VLAN to which the frame belongs, according to the IEEE802.1Q VLAN tagging standard. When a switch receives a frame, it examines the frame header to see if it contains a VLAN tag (tagged frame) or no tag (untagged frame). After switching the frame to an outgoing port and before transmitting it, the switch determines if the tag information should be kept in the header or should be stripped out and made into an untagged frame. Incoming Frames Tagged frames received by the switch are only accepted (not dropped or discarded) if the tag information contained in the frame is equal to one of the VIDs of which the port is a member. If the tag information contained in the frame does not match one of these VIDs, the frames are dropped or discarded. Untagged frames received by the switch are always accepted by all ports on the switch. As described in Port VLAN Identifier on page 106, each untagged frame received by the switch is assigned a VLAN number equal to the PVID. The switch then forwards this frame to one of the other member ports of that VLAN. Section I: Using the Menus Interface 107

108 Chapter 8: Virtual LANs and GVRP Outgoing Frames Frames being transmitted from the switch retain their VLAN tag information in the frame header if the frame s tag does not match the PVID of the port (a tagged member of that VLAN). These frames are tagged after transmission from the switch. The VLAN tag information in the header of the frame is stripped from the frame s header if the tag matches the PVID of the port (an untagged member of the VLAN). These frames are untagged after transmission from the switch. Guidelines for Creating a VLAN The following are guidelines for creating a VLAN. Each VLAN must be assigned a unique VID. If a particular VLAN spans multiples switches, each part of the VLAN on the different switches should be assigned the same VID. A port can be an untagged member of only one VLAN at a time. Each port must be assigned a PVID (the default is 1). This value must match one of the VIDs assigned to the port. If you need to change the PVID value, you must configure it on a port after you assign a port to a VLAN. For instructions, refer to Configuring the Port PVID on page 116. A VLAN that spans multiple switches requires a port on each switch where the VLAN is located to function as an interconnection between the switches where the various parts of the VLAN reside. This port may be defined as an untagged member of a VLAN where the port is connected to another switch via another untagged port member of the VLAN. This means that all traffic on this inter-switch port contains traffic for that VLAN only. See Figure 26 on page 109. Another scenario is where the port could be an untagged member of one VLAN and a tagged member of one or more VLANs. The port would then be connected to another switch via a port with the same VLAN membership. This means that the traffic on this inter-switch port is for any or all of the VLANs of which the port is a member. If there are end nodes in different VLANs that need to communicate with each other, a router or Layer 3 switch is required to interconnect the VLANs. The switch can support up to a total of 255 VLANs. 108 Section I: Using the Menus Interface

109 24 Port Gigabit Ethernet Switch POWER R 23R R 24R 24 Port Gigabit Ethernet Switch POWER R 23R R 24R PORT ACTIVITY /100 LINK SFP PORT ACTIVITY ACT /100 LINK SFP ACT AT-S84 Management Software User s Guide Untagged VLAN Figure 26 illustrates how VLANs with untagged port members can be interconnected. In this example, the Sales VLAN spans two AT-9000/24 Gigabit Ethernet switches, while the Production and Engineering VLANs are limited to just one switch. Sales VLAN (VID 2) Engineering VLAN (VID 3) AT-9000/24 AT-9000/24 Gigabit Ethernet Switch 793 Router WAN AT-9000/24 AT-9000/24 Gigabit Ethernet Switch 793 Production VLAN (VID 4) Sales VLAN (VID 2) Figure 26. Untagged VLAN Section I: Using the Menus Interface 109

110 Chapter 8: Virtual LANs and GVRP The table below lists the port numbers for the Sales, Engineering, and Production VLANs on the switches. In this example, all ports are untagged members of their respective VLANS. Sales VLAN (VID 2) Engineering VLAN (VID 3) Production VLAN (VID 4) AT-9000/24 Gigabit Ethernet Switch (top) AT-9000/24 Gigabit Ethernet Switch (bottom) Ports 1, 3-5, 7, 20 (PVID 2) Ports 1, 2, 4 (PVID 2) Ports 9, 11, 13, 21, 23 & 24 (PVID 3) None None Ports 10, 12, 18, (PVID 4) Note the following concerning the example: Sales VLAN - This VLAN spans both switches. It has a VID value of 2 and consists of four untagged port members on the top switch and three untagged port members on the bottom switch. The two parts of the VLAN are connected by a direct link from port 4 on the top switch to port 1 on the bottom switch. This direct link allows the two parts of the Sales VLAN to function as one logical LAN segment. Port 20 is used as a connection to the router, other VLANs, and the WAN. Engineering VLAN - This VLAN is on the top switch only and consists of four untagged port members. The workstations are connected to ports 3, 5, and 7. Port 24 is used as a connection to the router, other VLANs, and the WAN. Production VLAN - This VLAN has the VLAN of 4 and is on the bottom switch only. The workstations are connected to ports 3, 6, and 8. Port 21 is used as a connection to the router, other VLANS, and the WAN. 110 Section I: Using the Menus Interface

111 24 Port Gigabit Ethernet Switch POWER R 23R R 24R 24 Port Gigabit Ethernet Switch POWER R 23R R 24R PORT ACTIVITY /100 LINK SFP PORT ACTIVITY ACT /100 LINK SFP ACT AT-S84 Management Software User s Guide Tagged VLAN Example Figure 27 illustrates how tagged and untagged ports can be used to interconnect IEEE 802.1Q-based products. Sales VLAN (VID 2) Engineering VLAN (VID 3) AT-9000/24 AT-9000/24 Gigabit Ethernet Switch 793 Router WAN AT-9000/24 AT-9000/24 Gigabit Ethernet Switch 793 Production VLAN (VID 4) Sales VLAN (VID 2) Figure 27. Tagged VLAN Section I: Using the Menus Interface 111

112 Chapter 8: Virtual LANs and GVRP The port assignments for the VLANs are as follows: Sales VLAN (VID 2) Engineering VLAN (VID 3) Untagged Port Members Tagged Port Members Untagged Port Members Tagged Port Members AT-8000/8POE Fast Ethernet Switch (top) 1, 2, 5, 7, 24 (PVID 2) None 9, 11, 13, 21, 23 (PVID 3) 14, 24 AT-8000/8POE Fast Ethernet Switch (bottom) 2, 4, 13 (PVID 2) None 10, 12, 18, 22 (PVID 3) 13 Ports 1, 2, 5, and 7 on the top switch and ports 2, 4, and 13 on the bottom switch are assigned a PVID of 2 and are untagged members of VLAN 2. These ports are connected to workstations from Sales. Ports 9, 11, 13, 21, and 23 on the top switch and ports 10, 12, 18, 20, and 22 on the bottom switch are assigned a PVID of 3 and are untagged members of VLAN 3. These ports are connected to workstations from Engineering. Ports 14 and 24 on the top switch are untagged members of VLAN2 and are tagged members of VLAN 3. Port 13 on the bottom switch is an untagged member of VLAN 2, and a tagged member of VLAN 3. Traffic passed between the switches and the router consist of tagged and untagged packets from both VLANs. These ports provide a common connection that enables different member ports of the same VLAN to communicate with each other while maintaining data separation between VLANs. 112 Section I: Using the Menus Interface

113 AT-S84 Management Software User s Guide Working with VLANS This section contains the following procedures: Creating a VLAN, next Configuring the Port PVID on page 116 Displaying the VLANs on page 117 Modifying a VLAN on page 119 Deleting a VLAN on page 120 Resetting to the Default VLAN on page 121 Creating a VLAN This section contains the procedure for creating a new VLAN. This procedure assigns the VLAN a name, a VID number, and the untagged and tagged member ports. After you have performed this procedure, you must configure the untagged members of the VLAN by adjusting their PVID values to match the virtual LAN s VID number. The PVID value of a port must match its virtual LAN s VID in order for a port to be considered an untagged member of the VLAN. This procedure is found in Configuring the Port PVID on page 116. To create a VLAN, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type V to select VLAN Management. Section I: Using the Menus Interface 113

114 Chapter 8: Virtual LANs and GVRP The VLAN Management Menu, which displays any existing VLANs, is shown in Figure 28. AT-9000/24 Local Management System Advanced Switch Configuration -> VLAN Management Menu GVRP Status : Disabled VLAN ID VLAN Name VLAN Type Default VLAN Permanent 3 Marketing Static <COMMAND> [N]ext Page [C]reate VLAN C[o]nfig VLAN Member [P]revious Page [D]elete VLAN [S]et Port Config [R]eset VLAN to Default Set [G]VRP Status [Q]uit to Previous Menu Command> Figure 28. VLAN Management Menu 3. From the VLAN Management Menu, type C to select Create VLAN. 114 Section I: Using the Menus Interface

115 AT-S84 Management Software User s Guide The VLAN Creation Menu is shown in Figure 29. AT-9000/24 Local Management System VLAN Management -> VLAN Creation Menu VLAN ID : VLAN Name: Port Member <COMMAND> Set VLAN [I]D/[I]ndex S[e]lect Port Member Set VLAN [N]ame [A]pply [Q]uit to Previous Menu Command> Figure 29. VLAN Creation Menu 4. To specify the VLAN ID, do the following: a. Type I to select Set VLAN ID/Index. The following prompt is displayed: Set VLAN ID->Enter VLAN ID> Note A VLAN must have a VID. b. Enter a value from 2 to 4094 and press Enter. 5. To specify the VLAN name, do the following: a. Type N to select Set VLAN Name. The following prompt is displayed: Set VLAN Name -> Enter VLAN Name > b. Type a name for the VLAN and press Enter. The VLAN name can contain up to 32 characters including spaces. 6. To add ports to the VLAN, do the following: Section I: Using the Menus Interface 115

116 Chapter 8: Virtual LANs and GVRP a. Type S to select Select Port Number. The following prompt is displayed: Enter port number > b. Enter the ports of the VLAN. You can specify the ports individually separated by commas, for example, 2,7,15, as a range of ports separated by a hyphen, for example, 2-4, or both, for example, 2-7,15, When the VLAN is complete, type A to select Apply and apply the VLAN settings. The VLAN Management Menu is displayed again with information about the VLAN you just created. The VLAN is now active on the switch. 8. If you intend to define a port as an untagged member of a VLAN, you will need to change the PVID of the port to match the VLAN s VID. Refer to Configuring the Port PVID on page 116. Configuring the Port PVID This procedure adjusts a port s VID value. By default, every port has a PVID assigned to it. The PVID value determines if a port is a tagged or untagged member of a VLAN. A port is an untagged member of a VLAN whose VID value matches its PVID. A port is a tagged member of a VLAN whose VID does not match the PVID. (The PVID must equal on of the port s VIDs.) A port can be a tagged member of a VLAN only if the port is a member of more than one VLAN at the same time. When you create a new VLAN, the ports of the new VLAN are initially designated as tagged members of the new VLAN. The PVIDs of the ports retain the previous settings after the ports become members of a new VLAN. If you want the ports to function as untagged members of a new VLAN, you must change the PVID values to match the VID of the VLAN, as shown in the following procedure. To adjust the PVID value of a port, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type V to select VLAN Management. The VLAN Management Menu is shown in Figure 28 on page Type S to select Set Port Config. 116 Section I: Using the Menus Interface

117 AT-S84 Management Software User s Guide The VLAN Port Configuration Menu is shown in Figure 28 on page Type V to select Set Port VID. The following prompt is displayed: Set PVID->Enter port number 5. Type the number of the port whose PVID value you want to configure and press Enter. You can configure only one port at a time. The following prompt is displayed: Enter PVID for port n 6. Type the new PVID for the port and press Enter. The PVID should equal the VID of the VLAN where you want the port to be an untagged member. Note If you specify a PVID that does not correspond to any VIDs on the switch, the management software creates a new VLAN with a VID that equals the PVID. The VLAN is not assigned any name. 7. Repeat steps 4 through 6 to configure additional ports. Displaying the VLANs To display a list of the VLANs on the switch, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type V to select VLAN Management. The VLAN Management Menu is shown in Figure 28 on page 114. The currently configured VLANs are displayed in a table with the following columns of information: VLAN ID The ID of the VLAN. VLAN Name The name of the VLAN. VLAN Type The type of VLAN, either permanent or static. Only the Default VLAN is permanent. All other and tagged VLANs are static. Section I: Using the Menus Interface 117

118 Chapter 8: Virtual LANs and GVRP 3. To view the ports of a VLAN, type O to select Config VLAN Member. The following prompt is displayed: Enter VLAN ID> 4. Enter the VID of the VLAN you want to view and press Enter. The Config VLAN Member Menu is shown in Figure 30. AT-9000/24 Local Management System VLAN Management -> Config VLAN Member VLAN ID : 3 VLAN Name: Marketing Port Tagging No 5 No 6 Yes 7 No 8 No <COMMAND> [N]ext Page [C]hange VLAN Name [A]dd VLAN Member [P]revious page [R]emove VLAN Member [Q]uit to Previous Menu Command> Figure 30. Config VLAN Member Menu The menu displays the following information: VLAN ID The VID number of the VLAN. VLAN Name The name of the VLAN. Port The ports of the VLAN. Tagging Whether a port is a tagged or untagged member of the VLAN. An untagged port is designated with No and a tagged port with Yes. The selections in this Config VLAN Member menu are explained in Modifying a VLAN on page Section I: Using the Menus Interface

119 AT-S84 Management Software User s Guide Modifying a VLAN The topics in this section include: Before performing this procedure, note the following: You cannot change the VID of a VLAN. You cannot add an untagged port to a VLAN with this procedure. That function requires changing a port s VID value, as explained in Configuring the Port PVID on page 116 You cannot remove an untagged port from a VLAN with this procedure. To remove an untagged port from a VLAN, you must assign it as an untagged member of another VLAN by changing its PVID, as explained in Configuring the Port PVID on page 116. Changing the VLAN Name To change the name of a VLAN, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type V to select VLAN Management. The VLAN Management Menu is shown in Figure 28 on page Type O to select Config VLAN Member. The following prompt is displayed: Enter VLAN ID > Type the number of the VLAN you want to modify and press Enter. The Config VLAN Member menu is shown in Figure 30 on page Type C to select Change VLAN Name. The following prompt is displayed: Enter new VLAN name> 5. Type the new name for the VLAN and press Enter. A VLAN name can be up to 32 characters and can include spaces. Adding or Removing a Tagged Port in a VLAN To add a tagged port to the VLAN, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Section I: Using the Menus Interface 119

120 Chapter 8: Virtual LANs and GVRP Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type V to select VLAN Management. The VLAN Management Menu is shown in Figure 28 on page To add a tagged port, type A for Add Member and press Enter. The following prompt is displayed: Add member->enter port number > 4. Enter the number of the port and press Enter. You can add more than one port at a time. You can specify the ports individually (i.e., 2,5,11), as a range (i.e., 4-7), or both (i.e., 2,5,11-15). 5. To remove a tagged port, type R for Remove Member and press Enter. The following prompt is displayed: Delete number -> Enter port number > 6. Enter the number of the tagged port you want to remove and press Enter. You can remove more than one port at a time. You can specify the ports individually (i.e., 2,5,11), as a range (i.e., 4-7), or both (i.e., 2,5,11-15). Deleting a VLAN To delete a VLAN, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type V to select VLAN Management. The VLAN Management Menu is shown in Figure 28 on page Type D to select Delete VLAN. The following prompt is displayed: Enter VLAN ID > 4. Type the VLAN ID of the VLAN you want to delete and press Enter. You can enter only one VID. 120 Section I: Using the Menus Interface

121 AT-S84 Management Software User s Guide Note The VLAN is immediately deleted with no confirmation prompt. Note You cannot delete the Default VLAN which has a VID of 1. The VLAN Management Menu is updated to show that the VLAN is deleted. The untagged port members of a deleted VLAN are automatically returned to the Default_VLAN with a PVID of 1. Resetting to the Default VLAN The following procedure for deletes all VLANs, except the Default_VLAN, on a switch. To delete selected VLANs, refer to Deleting a VLAN on page 120. To reset to the default VLAN, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type V to select VLAN Management. The VLAN Management Menu is shown in Figure 28 on page Type R to select Reset VLAN to Default. The following prompt is displayed: Are you sure to reset VLAN configuration to factory default (Y/N)> 4. Type Y for Yes. The following prompt is displayed: Reset to factory default completed, press any key to continue. 5. Press any key. Section I: Using the Menus Interface 121

122 AT-9000/24 24 Port Gigabit Ethernet Switch POWER R 23R R 24R PORT ACTIVITY /100 LINK SFP ACT 793 AT-9000/24 24 Port Gigabit Ethernet Switch POWER R 23R R 24R PORT ACTIVITY /100 LINK SFP ACT 793 AT-9000/24 24 Port Gigabit Ethernet Switch POWER R 23R R 24R PORT ACTIVITY /100 LINK SFP ACT 793 Chapter 8: Virtual LANs and GVRP GVRP This section describes GVRP and contains the following topics: GVRP Overview, next Enabling or Disabling GVRP on page 123 GVRP Overview The GARP VLAN Registration Protocol (GVRP) allows network devices to share VLAN information. The main purpose of GVRP is to allow switches to automatically discover some of the VLAN information that would otherwise need to be manually configured in each switch. This is helpful in networks where VLANs span more than one switch. Without GVRP, you must manually configure your switches to ensure that the various parts of a VLAN can communicate across the different switches. GVRP, which is an application of the Generic Attribute Registration Protocol (GARP), does this for you automatically. Figure 31 provides an example of how the GVRP feature works: Port 1 Port 3 Port 4 Port 2 Switch #1 Static VLAN Sales VID=11 Switch #2 Switch #3 Static VLAN Sales VID=11 Figure 31. GVRP Example Switches 1 and 3 contain the Sales VLAN, but switch 2 does not. Consequently, the end nodes of the two parts of the Sales VLANs are unable to communicate with each other. Without GVRP, you would need to configure switch 2 by creating a Sales VLAN on the switch and adding ports 2 and 3 as members of the VLAN. If you have a large network and a large number of VLANS, this type of manual configuration can be cumbersome and time consuming. Instead, let GVRP set up the communications path for you. Guidelines Following are guidelines to observe when you use GVRP: Both ports that constitute a data link between the switch and the other device must be running GVRP. You cannot modify a GVRP VLAN; you can only enable or disable it. 122 Section I: Using the Menus Interface

123 AT-S84 Management Software User s Guide GVRP is only aware of those VLANs that have active nodes, or where at least one end node of a VLAN has established a valid link with a switch. GVRP is not aware of a VLAN if there are no active end nodes or if no end nodes have established a link with the switch. Enabling or Disabling GVRP GVRP is disabled by default. To enable or disable GVRP, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type V to select VLAN Management. The VLAN Management Menu is shown in Figure 28 on page From the The VLAN Management Menu, type G to select Set GVRP Status. The following prompt is displayed: Enable or Disable GVRP status (E/D)> 4. Type E to enable GVRP or D to disable it. Section I: Using the Menus Interface 123

124 Chapter 8: Virtual LANs and GVRP 124 Section I: Using the Menus Interface

125 Chapter 9 Quality of Service (QoS) This chapter contains the procedures for configuring the Quality of Service (QoS) parameters of the switch. This chapter contains the following sections: QoS Overview on page 126 Mapping CoS Priorities to Egress Queues on page 129 Configuring CoS on page 132 Section I: Using the Menus Interface 125

126 Chapter 9: Quality of Service (QoS) QoS Overview When a port on an Ethernet switch becomes oversubscribed its egress queues contain more packets than the port can handle in a timely manner the port may be forced to delay the transmission of some packets, resulting in the delay of packets from reaching their destinations. A port may be forced to delay transmission of packets while it handles other traffic, and, in some situations, some packets destined to be forwarded to an oversubscribed port from other switch ports may be discarded. Minor delays are often of no consequence to a network or its performance. But there are applications, referred to as delay or time sensitive applications, that can be impacted by packet delays. Voice transmission and video conferencing are two examples. If packets carrying data for either of these are delayed from reaching their destination, the audio or video quality may suffer. This is where QoS can be of value. It allows you to manage the flow of traffic through a switch by having the switch ports give higher priority to some packets, such as delay sensitive traffic, over other packets. This is referred to as prioritizing traffic. QoS actually consists of several different elements. The element supported by the AT-9000/24 Gigabit Ethernet Switch is called Class of Service (CoS). CoS applies primarily to tagged packets. As explained in Incoming and Outgoing Tagged and Untagged Frames on page 107, a tagged packet contains information within it that specifies the VLAN to which the packet belongs. A tagged packet can also contain a priority level. This priority level is used by network switches and other networking devices to know how important (delay sensitive) that packet is in comparison to other packets. Packets of a high priority are typically handled before packets of a low priority. CoS, as defined in the IEEE 802.1p standard, has eight levels of priority. The priorities are 0 to 7, with 0 the lowest priority and 7 the highest. When a tagged packet is received on a port on the switch, it is examined by the AT-S84 software for its priority. The switch software uses the priority to determine which egress priority queue the packet should be stored in on the egress port. Each port on the switch has four priority queues, 0 (low) to 3 (high). When a tagged packet enters a switch port, the switch responds by placing the packet into one of the queues according to the assignments shown in Table 2. A packet in a high priority queue is typically transmitted out a port sooner than a packet in a low priority queue. 126 Section I: Using the Menus Interface

127 AT-S84 Management Software User s Guide Table 2. Default Mappings of IEEE 802.1p Priority Levels to Egress Port Priority Queues IEEE 802.1p Traffic Class Egress Port Priority Queue For example, a tagged packet with a priority tag of 6 is placed in the egress port s highest priority queue of 3, while a packet with a priority tag of 1 is placed in the lowest priority queue. Note QoS is disabled by default on the switch. You can customize these priority-to-queue assignments using the AT-S84 management software. The procedure for changing the default mappings is found in Mapping CoS Priorities to Egress Queues on page 129. You can configure a port to completely ignore the priority levels in its tagged packets and instead use a temporary priority level assigned to the port. For instance, perhaps you decide that all tagged packets received on port 4 should be assigned a priority level of 5, regardless of the priority level in the packets themselves. The procedure for overriding priority levels is explained in Configuring CoS on page 132. CoS relates primarily to tagged packets rather than untagged packets because untagged packets do not contain a priority level. By default, all untagged packets are placed in a port s Q0 egress queue, the queue with the lowest priority. But you can override this and instruct a port s untagged frames to be stored in a higher priority queue. The procedure for this is also explained in Configuring CoS on page 132. One last thing to note is that CoS does not change the priority level in a tagged packet. The packet leaves the switch with the same priority it had when it entered. This is true even if you change the default priority-toegress queue mappings. Section I: Using the Menus Interface 127

128 Chapter 9: Quality of Service (QoS) The default setting for Quality of Service is disabled. When the feature is disabled, all tagged packets are stored in the lowest priority queue of a port. 128 Section I: Using the Menus Interface

129 AT-S84 Management Software User s Guide Mapping CoS Priorities to Egress Queues This procedure explains how to change the default mappings of CoS priorities to egress priority queues, shown in Table 2 on page 127. This is set at the switch level and applies to all ports. This procedure also enables and disables QoS. To change the mappings, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type S to select Quality of Service Configuration. The Quality of Service Configuration Menu is shown in Figure 32. AT-9000/24 Local Management System Advanced Switch Configuration -> Quality of Service Configuration Menu [T]raffic Class Configuration [P]ort Priority Configuration [Q]uit to previous menu Command> Figure 32. Quality of Service Configuration Menu 3. From the Quality of Service Configuration Menu, type T to select Traffic Class Configuration. Section I: Using the Menus Interface 129

130 Chapter 9: Quality of Service (QoS) The Traffic Class Configuration Menu is shown in Figure 33. AT-9000/24 Local Management System Quality of Service Configuration -> Traffic Class Configuration Menu QoS Status : Disabled Traffic Class Queue : Highest : Lowest <COMMAND> Set [S]tatus Set [P]riority Queue [Q]uit to previous Page Command> Figure 33. Traffic Class Configuration Menu 4. To enable or disable QoS, do the following: a. Type S to select Set Status. The following prompt is displayed: Enable or Disable QoS (E/D) > b. Type E to enable QoS or D to disable it. The default setting is disabled. When disabled, all tagged packets are stored in the lowest priority queue of a port. 5. To change the egress priority queue assignment of an 802.1p traffic class, do the following: a. Type P to select Set Priority Queue. The following prompt is displayed: Enter traffic class> b. Enter the traffic class whose egress priority queue you want to change. The range is 0 to 7. You can specify only one traffic class at a time. 130 Section I: Using the Menus Interface

131 AT-S84 Management Software User s Guide The following prompt is displayed: Enter queue for traffic class n> c. Enter the new egress queue number for the traffic class. The range is 0 to 3. 0 is the lowest priority queue and 3 is the highest. You can specify only one egress queue. Section I: Using the Menus Interface 131

132 Chapter 9: Quality of Service (QoS) Configuring CoS As explained in QoS Overview on page 126, a packet received on a port is placed it into one of four priority queues on the egress port according to the switch s mapping of 802.1p priority levels to egress priority queues. The default mappings are shown in Table 2 on page 127. You can override the mappings at the port level by assigning a different egress queue to a port. Note that this assignment is made on the ingress port and before the frame is forwarded to the egress port. Consequently, you need to configure this feature on the ingress port. For example, you can configure a switch port so that all ingress frames are stored in egress queue 3 of the egress port. Note The switch does not alter the original priority level in tagged frames. The frames leave the switch with the same priority level they had when they entered the switch. To configure CoS for a port, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type S to select Quality of Service Configuration. The Quality of Service Configuration Menu is shown in Figure 32 on page From the Quality of Service Configuration Menu, type P to select Port Priority Configuration. 132 Section I: Using the Menus Interface

133 AT-S84 Management Software User s Guide The Port Priority Configuration Menu is shown in Figure 34. AT-9000/24 Local Management System Quality of Service Configuration -> Port Priority Configuration Menu Port Trunk Queue Override Disabled Disabled Disabled Disabled Disabled Disabled Disabled Disabled Disabled Disabled Disabled Disabled 3 : Highest 0 : Lowest <COMMAND> [N]ext Page Set P[r]iority Queue Set [T]runk Priority Queue [P]revious Page Set [O]verride Status Set Trun[k] Override Status [Q]uit to previous menu Command> Figure 34. Port Priority Configuration Menu The columns in the menu display the following information: Port Displays the port number. Trunk Displays the trunk number if the port is a member of a trunk. Queue Displays the number of the queue where untagged packets received on the port are stored on the egress queue. Override Displays whether the priority level in ingress tagged frames is being used or not. If No, the override is disabled and the port is using the priority levels contained within the frames to determine the egress queue. If Yes, the override is enabled and the tagged packets are stored in the egress queue specified in the Queue column. Section I: Using the Menus Interface 133

134 Chapter 9: Quality of Service (QoS) 4. To change the egress priority queue assignment of an 802.1p traffic class, do the following: a. Type R to select Set Priority Queue. The following prompt is displayed: Enter traffic class> b. Enter the traffic class whose egress priority queue you want to change. The range is 0 to 7. You can specify only one traffic class at a time. 5. To configure a tagged port or trunk so that the switch ignores the priority tag in ingress tagged frames, do the following: a. Type O to select Set Override Status to configure a port or K to select Set Trunk Override Status to configure a trunk. The following prompt is displayed is you are configuring a port: Set Priority Queue->Enter port number> The following prompt is displayed if you are configuring a trunk: Enter trunk group number> b. Enter the port or trunk number that you want to configure. You can configure only one port or trunk at a time. A prompt similar to the following is displayed: Enable or Disable override for port n (E/D)> c. Type E to enable the override or D to disable it. Note The tagged information in a frame is not changed as the frame traverses the switch. A tagged frame leaves a switch with the same priority level that it had when it entered. The default for this parameter is disabled, meaning that the priority level of tagged frames is determined by the priority level specified in the frames themselves. 6. To set the priority queue for a trunk, do the following: a. Type T to select Set Trunk Priority Queue. The following prompt is displayed: Enter trunk group number> 134 Section I: Using the Menus Interface

135 AT-S84 Management Software User s Guide b. Enter the trunk number that you want to configure. You can configure only one trunk at a time. A prompt similar to the following is displayed: Enter queue for trunk group n>> c. Enter the queue number for the trunk. Section I: Using the Menus Interface 135

136 Chapter 9: Quality of Service (QoS) 136 Section I: Using the Menus Interface

137 Chapter 10 IGMP Snooping This chapter describes how to configure the OGMP snooping feature on the switch and includes the following sections: IGMP Snooping Overview on page 138 Configuring IGMP on page 140 Viewing the Multicast Groups on page 142 Section II: Menus Interface 137

138 Chapter 10: IGMP Snooping IGMP Snooping Overview The Internet Group Management Protocol (IGMP) enables routers to create lists of nodes that are members of multicast groups. (A multicast group is a group of end nodes that want to receive multicast packets from a multicast application.) The router creates a multicast membership list by periodically sending out queries to the local area networks connected to its ports. A node wanting to become a member of a multicast group responds to a query by sending a report. A report indicates an end node s desire to become a member of a multicast group. Nodes that join a multicast group are referred to as host nodes. After becoming a member of a multicast group, a host node must continue to periodically issue reports to remain a member. After the router has received a report from a host node, it notes the multicast group that the host node wants to join and the port on the router where the node is located. Any multicast packets belonging to that multicast group are then forwarded by the router out the port. If a particular port on the router has no nodes that want to be members of multicast groups, the router does not send multicast packets out the port. This improves network performance by restricting multicast packets only to router ports where host nodes are located. There are three versions of IGMP versions 1, 2, and 3. One of the differences between the versions is how a host node signals that it no longer wants to be a member of a multicast group. In version 1 it stops sending reports. If a router does not receive a report from a host node after a predefined length of time, referred to as a time-out value, it assumes that the host node no longer wants to receive multicast frames, and removes it from the membership list of the multicast group. In version 2 a host node exits from a multicast group by sending a leave request. After receiving a leave request from a host node, the router removes the node from appropriate membership list. The router also stops sending multicast packets out the port to which the node is connected if it determines there are no further host nodes on the port. Version 3 adds the ability of host nodes to join or leave specific sources in a multicast group through the use of Group-Source report and Group- Source leave messages. The IGMP snooping feature on the switch supports IGMP versions 1 and 2. It enables the switch to monitor the flow of queries from a router and reports and leave messages from host nodes to build its own multicast membership lists. It uses the lists to forward multicast packets only to switch ports where there are host nodes that are members of multicast groups. This improves switch performance and network security by 138 Section II: Menus Interface

139 AT-S84 Management Software User s Guide restricting the flow of multicast packets only to those switch ports connected to host nodes. Without IGMP snooping a switch would have to flood multicast packets out all of its ports, except the port on which it received the packet. Such flooding of packets can negatively impact switch and network performance. The switch maintains its list of multicast groups through an adjustable timeout value, which controls how frequently it expects to see reports from end nodes that want to remain members of multicast groups, and by processing leave requests. By default, IGMP snooping is disabled on the switch. Section II: Menus Interface 139

140 Chapter 10: IGMP Snooping Configuring IGMP To configure IGMP, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 4 on page From the Advanced Switch Configuration Menu, type I to select IGMP Snooping Configuration. The IGMP Configuration Menu is shown in Figure 35. AT-9000/24 Local Management System Advanced Switch Configuration -> IGMP Configuration Menu IGMP Snooping Status: IGMP Snooping Age-Out Timer: Disabled 280 seconds VLAN ID Multicast group address <COMMAND> [N]ext Page [E]nable/Disable IGMP Snooping [P]revious Page [S]et Age-Out Timer [V]iew group members [Q]uit to previous menu Command> Figure 35. IGMP Configuration Menu 3. Type E to select Enable/Disable IGMP Snooping. The following prompt is displayed: Enable or Disable IGMP snooping (E/D)> 4. Type E to enable IGMP snooping or D to disable IGMP snooping. 5. If you are activating the feature, type S to Set Age-Out Timer. The following prompt is displayed: 140 Section II: Menus Interface

141 AT-S84 Management Software User s Guide Enter age out time> 6. Specify the age-out time in seconds. The range is 280 to 420 seconds and the default is 280 seconds. Section II: Menus Interface 141

142 Chapter 10: IGMP Snooping Viewing the Multicast Groups To view the IGMP snooping multicast groups, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 4 on page From the Advanced Switch Configuration Menu, type I to select IGMP Snooping Configuration. The IGMP Configuration Menu is shown in Figure 35 on page Start your viewing application. 4. Type V to select View group members. The following prompt is displayed: Enter VLAN ID> 5. Enter the VLAN ID number. The menu is updated to show the MAC address of the multicast group, as shown in Figure 36 AT-9000/24 Local Management System Advanced Switch Configuration -> IGMP Configuration Menu IGMP Snooping Status:Disabled IGMP Snooping Age-Out Timer:280 seconds VLAN ID Multicast group address :00:5E:7F:FF:FA <COMMAND> [N]ext Page [E]nable/Disable IGMP Snooping [P]revious Page [S]et Age-Out Timer [V]iew group members [Q]uit to previous menu Command> 142 Section II: Menus Interface

143 AT-S84 Management Software User s Guide Figure 36. MAC Address DIsplayed on IGMP Configuration Menu The following prompt is displayed: Enter MAC Address (xx.xx.xx.xx.xx.xx)> 6. Enter the MAC address as shown on the menu. The View Group Members Menu is shown in Figure 37. AT-9000/24 Local Management System IGMP Configuration Menu -> View Group Members Menu VLAN ID: 1 Multicast group address: 01:00:5E:75:FF:FA Group members , <COMMAND> [Q]uit to previous menu Command> Figure 37. View Group Members Menu Section II: Menus Interface 143

144 Chapter 10: IGMP Snooping 144 Section II: Menus Interface

145 Chapter 11 Rapid Spanning Tree Protocol (RSTP) This chapter describes how to configure the Rapid Spanning Tree Protocol (RSTP) on the switch and includes the following sections: RSTP Overview on page 146 Enabling or Disabling RSTP on page 153 Configuring the RSTP Bridge Settings on page 156 Configuring STP Compatibility on page 158 Configuring RSTP Port Settings on page 159 Displaying the RSTP Topology on page 164 Section II: Menus Interface 145

146 Chapter 11: Rapid Spanning Tree Protocol (RSTP) RSTP Overview The performance of a Ethernet network can be negatively impacted by the formation of a data loop in the network topology. A data loop exists when two or more nodes on a network can transmit data to each other over more than one data path. The problem that data loops pose is that data packets can become caught in repeating cycles, referred to as broadcast storms, that needlessly consume network bandwidth and can significantly reduce network performance. RSTP prevents data loops from forming by ensuring that only one path exists between the end nodes in your network. Where multiple paths exist, this protocol places the extra paths in a standby or blocking mode, leaving only one main active path. RSTP can also activate a redundant path if the main path goes down. So not only do these protocols guard against multiple links between segments and the risk of broadcast storms, but they can also maintain network connectivity by activating a backup redundant path in case a main link fails. When a change is made to the network topology, such as the addition of a new bridge, a spanning tree protocol must determine whether there are redundant paths that must be blocked to prevent data loops, or activated to maintain communications between the various network segments. This is the process of convergence. RSTP can complete a convergence in seconds, and so greatly diminishes the possible impact the process can have on your network. At this time, only RSTP is available on the switch. The RSTP implementation complies with the IEEE 802.1w standard. The following subsections provide a basic overview on how RSTP operates and define the different parameters that you can adjust. Bridge Priority and the Root Bridge The first task that bridges perform when a spanning tree protocol is activated on a network is the selection of a root bridge. A root bridge distributes network topology information to the other network bridges and is used by the other bridges to determine if there are redundant paths in the network. A root bridge is selected by the bridge priority number, and sometimes the bridge s MAC address, also referred to as the bridge identifier. The bridge with the lowest bridge priority number in the network is selected as the root bridge. If two or more bridges have the same bridge priority number, of those bridges the one with the lowest MAC address is designated as the root bridge. 146 Section II: Menus Interface

147 AT-S84 Management Software User s Guide You can designate which switch on your network you want as the root bridge by giving it the lowest bridge priority number. You might also consider which bridge should function as the backup root bridge in the event you need to take the primary root bridge offline, and assign that bridge the second lowest bridge identifier number. You can change the bridge priority number for the switch. The bridge priority has a range of 0X0000 to 0XF000 and is specified in multiples of 0x1000. After the convergence process has completed, there is only one path between the switch and the root bridge. The active port on the switch through which the bridge is communicating with the root bridge is called the root port. Each switch in the spanning tree domain has a root port with the exception of the root bridge, which has no root port. Designated Bridge and Designated Port The switch that is directly connected to the root port of the switch is called the designated bridge. The port on the designated bridge that is connected to the switch s root port is called the designated port. Path Costs and Port Costs After the root bridge has been selected, the bridges must determine if the network contains redundant paths and, if one is found, they must select a preferred path while placing the redundant paths in a backup or blocking state. If redundant paths exist, the bridges that are a part of the paths must determine which path will be the primary, active path, and which path(s) will be placed in the standby, blocking mode. This is accomplished by an determination of path costs. The path offering the lowest cost to the root bridge becomes the primary path and all other redundant paths are placed into blocking state. Path cost is determined through an evaluation of port costs. Every port on a bridge participating in STP has a cost associated with it. The cost of a port on a bridge is typically based on port speed. The faster the port, the lower the port cost. The exception to this is the ports on the root bridge, where all ports have a port cost of 0. Path cost is the sum of the port costs between a bridge and the root bridge. Port cost also has an Auto-Detect feature. This feature allows spanning tree to automatically set the port cost according to the speed of the port, assigning a lower value for higher speeds. Auto-Detect is the default setting. Section II: Menus Interface 147

148 Chapter 11: Rapid Spanning Tree Protocol (RSTP) Table 3 lists the RSTP port costs with Auto-Detect. Table 3. RSTP Auto-Detect Port Costs Port Speed Port Cost 10 Mbps 2,000, Mbps 200, Mbps 20,000 Table 4 lists the RSTP port costs with Auto-Detect when the port is part of a port trunk. Table 4. RSTP Auto-Detect Port Trunk Costs Port Speed No. of Ports/ Trunk Port Cost You can override Auto-Detect and set the port cost manually. However, you must assign the same port cost to all ports that are members of a trunk. Port Priority 10/100/ ,000 10/100/ ,666 10/100/ ,000 10/100/ ,000 10/100/ ,333 10/100/ ,857 10/100/ ,500 If two paths have the same port cost, the bridges must select a preferred path. In some instances this can involve the use of the port priority parameter. This parameter is used as a tie breaker when two paths have the same cost. The range for port priority, in hexadecimal format, is 0 to 240, with 240 being the highest priority. As with bridge priority, this range is broken into multiples of 16. To select a port priority for a port, you enter the desired value. 148 Section II: Menus Interface

149 AT-S84 Management Software User s Guide Table 5 lists the values. The default value is 0. Table 5. Port Priority Value Increments Port Priority Port Priority If two paths have the same port cost and the same priority, then the ports with the lowest port MAC addresses become the root ports of their respective bridges. Hello Time and Bridge Protocol Data Units (BPDUs) The bridges that are part of a spanning tree domain communicate with each other using a bridge broadcast frame that contains a special section devoted to carrying STP or RSTP information. This portion of the frame is referred to as the bridge protocol data unit (BPDU). When a bridge is brought online, it issues a BPDU in order to determine whether a root bridge has already been selected on the network, and if not, whether it has the lowest bridge priority number of all the bridges and should therefore become the root bridge. The root bridge periodically transmits a BPDU to determine whether there have been any changes to the network topology and to inform other bridges of topology changes. The frequency with which the root bridge sends out a BPDU is called the hello time. This is a value that you can set in the AT-S84 management software. The interval is measured in seconds and the default is two seconds. Consequently, if an AT-9000/24 Gigabit Ethernet switch is selected as the root bridge of a spanning tree domain, it transmits a BPDU every two seconds. Point-to-Point and Edge Ports Part of the task of configuring RSTP is defining the port types on the bridge. This relates to the device(s) connected to the port. With the port types defined, RSTP can quickly reconfigure a network when a change in network topology is detected. Section II: Menus Interface 149

150 24 Port Gigabit Ethernet Switch POWER R 23R R 24R 24 Port Gigabit Ethernet Switch POWER R 23R R 24R PORT ACTIVITY /100 LINK SFP ACT PORT ACTIVITY /100 LINK SFP ACT Chapter 11: Rapid Spanning Tree Protocol (RSTP) There are two possible selections: Point-to-point port Edge port The default setting for the RSTP port point-to-point status is automatic. With the automatic setting, the point-to-point status is True of the port is operating in full-duplex mode. If the port is operating in half-duplex mode, then the point-to-point status is False. Figure 38 illustrates two AT-9000/24 Gigabit Ethernet switches that have been connected with one data link. With the link operating in full-duplex, the ports are point-to-point ports. AT-9000/ Point-to-Point Ports (Full-duplex Mode) AT-9000/ Figure 38. Point-to-Point Ports If a port is operating in half-duplex mode and is not connected to any further bridges participating in STP or RSTP, then you need to manually define the port as an edge port. The default setting for the edge port status is False. You must manually configure this setting for each port. There is no automatic mode for the edge port setting. Figure 39 illustrates an edge port on an AT-9000/24 Gigabit Ethernet switch. The port is connected to an Ethernet hub, which in turn is connected to a series of Ethernet workstations. This is an edge port because it is connected to a device operating at half-duplex mode and there are no participating STP or RSTP devices connected to it. 150 Section II: Menus Interface

151 24 Port Gigabit Ethernet Switch POWER 24 Port Gigabit Ethernet Switch POWER R 23R R 24R R 23R R 24R PORT ACTIVITY /100 LINK SFP ACT PORT ACTIVITY /100 LINK SFP ACT AT-S84 Management Software User s Guide AT-9000/24 Edge Port 793 Hub Figure 39. Edge Port A port can be both a point-to-point and an edge port at the same time. Figure 40 illustrates a port functioning as both a point-to-point and edge port. You must manually configure the edge port status. AT-9000/ Point-to-Point and Edge Port Workstation (Full-duplex Mode) Figure 40. Point-to-Point and Edge Port Determining whether a bridge port is point-to-point, edge, or both, can be a bit confusing. For that reason, do not change the default values for this RSTP feature unless you have a good grasp of the concept. In most cases, the default values work well. Mixed STP and RSTP Networks RSTP IEEE 802.1w is fully compliant with STP IEEE 802.1d. Your network can consist of bridges running both protocols. STP and RSTP in the same network can operate together to create a single spanning tree domain. The switch monitors the traffic on each port for BPDU packets. When you set the switch to RSTP mode, all the ports operate in that mode and reject STP BPDU packets. When you set the switch to operate in STPcompatible mode, the ports can receive either RSTP or STP BPDU Section II: Menus Interface 151

152 24 Port Gigabit Ethernet Switch POWER R 23R R 24R 24 Port Gigabit Ethernet Switch POWER R 23R R 24R PORT ACTIVITY /100 LINK SFP PORT ACTIVITY ACT /100 LINK SFP ACT Chapter 11: Rapid Spanning Tree Protocol (RSTP) packets. Rapid Spanning Tree and VLANs The spanning tree implementation in the AT-S84 management software is a single-instance spanning tree. The switch supports just one spanning tree. You cannot define multiple spanning trees. The single spanning tree encompasses all ports on the switch. If the ports are divided into different VLANs, the spanning tree crosses the VLAN boundaries. This point can pose a problem in networks containing multiple VLANs that span different switches and are connected with untagged ports. In this situation, STP blocks a data link because it detects a data loop. This can cause fragmentation of your VLANs. This issue is illustrated in Figure 41. Two VLANs, Sales and Production, span two AT-9000/24 Gigabit Ethernet switches. Two links consisting of untagged ports connect the separate parts of each VLAN. If RSTP is activated on the switches, one of the links is disabled. In the example, the port on the top switch that links the two parts of the Production VLAN is changed to the block state. This leaves the two parts of the Production VLAN unable to communicate with each other. Sales VLAN Production VLAN AT-9000/24 Blocked Port 793 Blocked Data Link AT-9000/24 Sales VLAN Production VLAN 793 Figure 41. VLAN Fragmentation You can avoid this problem by not activating rapid spanning tree or by connecting VLANs using tagged port members instead of untagged ports. (For information on tagged and untagged ports, refer to Chapter 8, Virtual LANs and GVRP on page 103.) 152 Section II: Menus Interface

153 AT-S84 Management Software User s Guide Enabling or Disabling RSTP To enable or disable RSTP, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type S to select Rapid Spanning Tree Configuration. The Rapid Spanning Tree Configuration Menu is shown in Figure 42. AT-9000/24 Local Management System Advanced Switch Configuration -> Rapid Spanning Tree Configuration Menu Global RSTP Status: Disabled Protocol Version: RSTP Root Port: 0 Time Since Topology Change: 118 Sec. Root Path Cost: 0 Topology Change Count: 1 Designated Root: C08F1211BB Bridge ID: AABB04 Hello Time: 2 Sec. Bridge Hello Time: 2 Sec. Maximum Age: 20 Sec. Bridge Maximum Age: 20 Sec. Forward Delay: 15 Sec. Bridge Forward Delay: 15 Sec <COMMAND> [E]nable/Disable Global RSTP Set Bridge [F]orward Delay Set RSTP Protocol [V]ersion RSTP [B]asic Port Configuration Set Bridge [P]riority RSTP [A]dvanced Port Configuration Set Bridge [H]ello Time Topology [I]nformation Set Bridge [M]aximum Age [Q]uit to previous menu Command> Figure 42. RSTP Configuration Menu The RSTP menu allows you to configure RSTP as well as to view the current settings and contains the following items of information in the middle portion: Root Port The active port on the switch that is communicating with the root bridge. If the switch is the root bridge for the LAN, then there is no root port and the root port parameter will be 0. Root Path Cost The sum of all the root port costs of all the bridges between the Section II: Menus Interface 153

154 Chapter 11: Rapid Spanning Tree Protocol (RSTP) switch s root port and the root bridge including the switch s root port cost. Time Since Topology Change The time in seconds since the last topology change took place. When RSTP detects a change to the LAN s topology or when the switch is rebooted, this parameter is reset to 0 seconds and begins incrementing until the next topology change is detected. Topology Change Count An integer that reflects the number of times RSTP has detected a topology change on the LAN since the switch was initially powered on or rebooted. The following parameters refer to the designated root bridge: Designated Root This parameter includes two fields: the root bridge priority and the MAC address of the root bridge. For example, C08F1211BB shows the root bridge priority as 1000, and 00C08F1211BB as the MAC address. Hello Time The hello time. See Hello Time and Bridge Protocol Data Units (BPDUs) on page 149. This parameter affects only the root bridge. Maximum Age The maximum amount of time that BPDUs are stored before being deleted on the root bridge. Forward Delay The time interval between generating and sending configuration messages by the root bridge. The following parameters refer to the switch. Bridge ID The MAC address of the bridge. The bridge identifier is use as a tie breaker in the selection of the root bridge when two or more bridges have the same bridge priority. You cannot change this setting. Bridge Hello Time This is the time interval between generating and sending configuration messages by the bridge. This parameter is active only when the switch is the root bridge. Bridge Maximum Age The length of time after which stored bridge protocol data units (BPDUs) are deleted by the bridge. Bridge Forward Delay This is the time interval between generating and sending configuration messages by the bridge. 154 Section II: Menus Interface

155 AT-S84 Management Software User s Guide 3. Type E to select Enable/Disable Global RSTP. The following prompt is displayed: Enable or Disable Global RSTP (E/D)> 4. Type E to enable RSTP or D to disable RSTP. Section II: Menus Interface 155

156 Chapter 11: Rapid Spanning Tree Protocol (RSTP) Configuring the RSTP Bridge Settings To configure the RSTP bridge settings, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type S to select Rapid Spanning Tree Configuration. The Rapid Spanning Tree Configuration Menu is shown in Figure 42 on page Type P to select Set Bridge Priority. The following prompt is displayed: Enter bridge priority> The value is in the range from 0x0000 to 0xF000 and in increments of 0x1000. The priority number for the bridge, in hexadecimal format. This number is used to determine the root bridge for RSTP. The bridge with the lowest priority number is selected as the root bridge. If two or more bridges have the same priority value, that is, the lowest of all the other bridges, then the bridge with the numerically lowest MAC address becomes the root bridge. When a root bridge goes offline, the bridge with the lowest priority number automatically takes over as the root bridge. This parameter can be from 0X0000 to 0XF000, with 0XF000 being the highest priority. The bridge priority is shown as the first field in the Designated Root and Bridge ID parameters. 4. Type H to select Set Bridge Hello Time. The following prompt is displayed: Enter bridge hello time> This is the time interval between generating and sending configuration messages by the bridge. This parameter can be from 1 to 10 seconds. The default is 2 seconds. 5. Type a number for the bridge priority. 6. Type M to select Set Bridge Maximum Age. The following prompt is displayed: 156 Section II: Menus Interface

157 AT-S84 Management Software User s Guide Enter bridge maximum age> The bridge maximum age is the length of time after which stored bridge protocol data units (BPDUs) are deleted by the bridge. All bridges in a bridged LAN use this aging time to test the age of stored configuration messages called bridge protocol data units (BPDUs). For example, if you use the default value 20, all bridges delete current configuration messages after 20 seconds. This parameter can be from 6 to 40 seconds. When you select a value for maximum age, observe the following rules: MaxAge must be greater than (2 x (HelloTime + 1)). MaxAge must be less than (2 x (ForwardingDelay - 1)). Note The aging time for BPDUs is different from the aging time used by the MAC address table. 7. Type a number for the bridge maximum age. 8. Type F to select Set Bridge Forward Delay. The following prompt is displayed: Enter bridge forward delay> The bridge forwarding delay is the waiting period in seconds before a bridge changes to a new state, for example, becomes the new root bridge after the topology changes. If the bridge transitions too soon, not all links may have yet adapted to the change, resulting in network loops. The range is 4 to 30 seconds. The default is 15 seconds. 9. Type a number for the bridge forward delay, between 4 and 30 seconds. Section II: Menus Interface 157

158 Chapter 11: Rapid Spanning Tree Protocol (RSTP) Configuring STP Compatibility Choosing an RSTP protocol version allows you to determine if the switch ports will operate in RSTP-only mode or are STP-compatible. This setting applies to all of the ports; you cannot set this on a per-port basis. To configure the STP compatibility, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type S to select Rapid Spanning Tree Configuration. The Rapid Spanning Tree Configuration Menu is shown in Figure 42 on page Type V to select Set RSTP Protocol Version. The following prompt is displayed: Set RSTP protocol version (S/R)> 4. Type S to make the ports STP-compatible, or R to make the ports operate only in RSTP mode. 158 Section II: Menus Interface

159 AT-S84 Management Software User s Guide Configuring RSTP Port Settings This section contains the following topics: Configuring the Basic RSTP Port Settings, next Configuring the Advanced RSTP Port Settings on page 161 Configuring the Basic RSTP Port Settings To configure the basic RSTP port settings, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type S to select Rapid Spanning Tree Configuration. The Rapid Spanning Tree Configuration Menu is shown in Figure 42 on page From the Rapid Spanning Tree Configuration Menu, type B to select RSTP Basic Port Configuration. The RSTP Basic Port Configuration menu is shown in Figure 43. AT-9000/24 Local Management System Rapid Spanning Tree Configuration -> RSTP Basic Port Configuration Port Trunk Link State Role Priority Path Cost STP Status Up Forwarding Disabled Disabled Down Forwarding Disabled Enabled Up Forwarding Root Enabled Down Forwarding Disabled Enabled Down Forwarding Disabled Enabled Down Forwarding Disabled Enabled Down Forwarding Disabled Enabled Down Forwarding Disabled Enabled Down Forwarding Disabled Enabled Down Forwarding Disabled Enabled Down Forwarding Disabled Enabled Down Forwarding Disabled Enabled <COMMAND> Set Port Pr[i]ority Set Port STP [S]tatus Set Path [C]ost [Q]uit to previous menu Command> Figure 43. RSTP Basic Port Configuration Menu Section II: Menus Interface 159

160 Chapter 11: Rapid Spanning Tree Protocol (RSTP) 4. Type I to select Set Port Priority. The following prompt is displayed: Select port number to be changed> Port number is in range from 1 to 9, 0 to set all ports 5. Enter the number of the port you want to change, or type 0 (zero) to apply the settings to all ports on the switch. The following prompt is displayed: Enter priority for port n> This parameter is used as a tie breaker when two or more ports are determined to have equal costs to the root bridge. The range is 0 to 240 in increments of 16. The default value is 8 (priority value 128). For a list of the increments, refer to Table 5 on page 149. Note If two or more ports have the same cost and priorities, then the port with the lowest MAC address becomes the forwarding port. 6. Enter a number for the priority. 7. Type C to select Set Path Cost. The following prompt is displayed: Select port number to be changed> Port number is in range from 1 to 9, 0 to set all ports 8. Enter the number of the port you want to change, or type 0 (zero) to apply the settings to all ports on the switch. The following prompt is displayed: Enter path cost for port n> The spanning tree algorithm uses the cost parameter to decide which port provides the lowest cost path to the root bridge for that LAN.The range is from 0 to 240, with 240 being the highest priority. For a list of the increments, refer to Table 5 on page 149. The default setting is based on the Auto-Detect Port Cost feature, which sets port cost depending on the speed of the port. The default values are shown in Table 3 on page Enter a number for the path cost. 10. Type S to select Set Port STP Status. 160 Section II: Menus Interface

161 AT-S84 Management Software User s Guide Select port number to be changed> Port number is in range from 1 to 9, 0 to set all ports This parameter enables or disables RSTP on a specified port or a group of ports in a trunk. 11. Enter the number of the port you want to change, or type 0 (zero) to apply the settings to all ports on the switch. The following prompt is displayed: Enable or Disable STP for port n (E/D)> 12. Type E to enable or D to disable STP on the port. Configuring the Advanced RSTP Port Settings To configure the advanced RSTP port settings, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type S to select Rapid Spanning Tree Configuration. The Rapid Spanning Tree Configuration Menu is shown in Figure 42 on page From the Rapid Spanning Tree Configuration Menu, type A to select RSTP Advanced Port Configuration. Section II: Menus Interface 161

162 Chapter 11: Rapid Spanning Tree Protocol (RSTP) The RSTP Advanced Port Configuration menu is shown in Figure 43. AT-9000/24 Local Management System Rapid Spanning Tree Configuration -> RSTP Advanced Port Configuration Port Trunk Link State Role Admin/OperEdge Admin/OperPtoP Migrat Down Forwarding Disabled False/False Auto/False Init Down Forwarding Disabled False/False Auto/False Init Down Forwarding Disabled False/False Auto/False Init Down Forwarding Disabled False/False Auto/False Init Down Forwarding Disabled False/False Auto/False Init Down Forwarding Disabled False/False Auto/False Init Down Forwarding Disabled False/False Auto/False Init Down Forwarding Disabled False/False Auto/False Init Down Forwarding Disabled False/False Auto/False Init Down Forwarding Disabled False/False Auto/False Init Down Forwarding Disabled False/False Auto/False Init Down Forwarding Disabled False/False Auto/False Init <COMMAND> [N]ext Page Set Port P-[t]o-P Status [P]revious Page Restart Port [M]igration Set Port [E]dge Status [Q]uit to previous menu Command> Figure 44. RSTP Advanced Port Configuration Menu 4. Type E to select Edge Status. The following prompt is displayed: The following prompt is displayed: Select port number to be changed> Port number is in range from 1 to 9, 0 to set all ports 5. Enter the number of the port you want to change, or type 0 (zero) to apply the settings to all ports on the switch. The following prompt is displayed: Set edge port for port n >(T/F)> This parameter defines whether the port is functioning as an edge port. The possible settings are True and False. For an explanation of this parameter, refer to Point-to-Point and Edge Ports on page Enter T for True or F for False to change the Admin/OperEdge status. 7. Type P to select P-to-P Status. 162 Section II: Menus Interface

163 AT-S84 Management Software User s Guide The following prompt is displayed: Select port number to be changed> Port number is in range from 1 to 9, 0 to set all ports 8. Enter the number of the port you want to change, or type 0 (zero) to apply the settings to all ports on the switch. The following prompt is displayed: Set point-to-point for port n >(A/T/F) This parameter defines whether the port is functioning as a point-topoint port. The possible settings are Auto, True, and False. For an explanation of this parameter, refer to Point-to-Point and Edge Ports on page Enter A for Auto, T for True, or F for False, according to the operating status your network requires, following the guidelines in Table Type M to select Restart Port Migration. The following prompt is displayed: Select port number to be changed> 11. Enter the number of the port you want to change. The following prompt is displayed: Restart the protocol migration process for port n? (Y/N) This parameter resets an RSTP port, allowing it to send RSTP BPDUs. When an RSTP bridge receives STP BPDUs on an RSTP port, the port transmits STP BPDUs. The RSTP port continues to transmit STP BPDUs indefinitely. 12. Enter T for True or F for False. Table 6. RSTP Point-to-Point Status Admin Operation Port Duplex Operation Auto True Full False Half True True Full or Half False False Full or Half Section II: Menus Interface 163

164 Chapter 11: Rapid Spanning Tree Protocol (RSTP) Displaying the RSTP Topology To display the RSTP topology, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type S to select Rapid Spanning Tree Configuration. The Rapid Spanning Tree Configuration Menu is shown in Figure 42 on page From the Rapid Spanning Tree Configuration Menu, type I to select Topology Information. The Topology Information menu is shown in Figure 43. AT-9000/24 Local Management System Rapid Spanning Tree Configuration -> Designated Topology Information Port Trunk Link Desig. Root Desig. Cost Desig. Bridge Desig. Port Up c08f1211bb c08f1211bb Down c08f1211bb c08f1211bb Up c46aa7fal Down c08f1211bb c08f1211bb Down c08f1211bb c08f1211bb Down c08f1211bb c08f1211bb Down c08f1211bb c08f1211bb Down c08f1211bb c08f1211bb Down c08f1211bb c08f1211bb Down c08f1211bb c08f1211bb Down c08f1211bb c08f1211bb Down c08f1211bb c08f1211bb <COMMAND> [N]ext Page [P]revious Page [Q]uit to previous menu Command> Figure 45. Topology Information Menu This menu displays the following information about the ports: Trunk The trunk of which the port is a member. 164 Section II: Menus Interface

165 AT-S84 Management Software User s Guide Link Whether the link on the port is up or down. Desig. Root The designated root bridge is the switch that is directly connected to the local switch. The MAC address of the designated root bridge is displayed. In the network topology, the designated bridge is located between the local switch and the root bridge. Desig. Cost The sum of all the root port costs on all bridges, including the switch, between the switch and the root bridge. Desig. Bridge An adjacent bridge to which the root port of the switch is actively connected. Desig. Port The port on the designated bridge that is directly connected to the root port of the local switch. Section II: Menus Interface 165

166 Chapter 11: Rapid Spanning Tree Protocol (RSTP) 166 Section II: Menus Interface

167 Chapter x Network Access Control This chapter contains information about and the procedure for configuring 802.1x Network Access Control. It includes the following sections: 802.1x Network Access Control Overview on page 168 Configuring 802.1x Network Access Control on page 174 Section I: Using the Menus Interface 167

168 Chapter 12: 802.1x Network Access Control 802.1x Network Access Control Overview 802.1x Network Access Control (IEEE 802.1x) is used to control who can send traffic through and receive traffic from a switch port. With this feature, the switch will not allow an end node to send or receive traffic through a port until the user of the node logs on by entering a username and password. This feature can prevent an unauthorized individual from connecting a computer to a switch port or using an unattended workstation to access your network resources. Only those users to whom you have assigned a username and password will be able to use the switch to access the network. This feature must be used with the RADIUS authentication protocol and requires that there be a RADIUS server on your network. The RADIUS server performs the authentication of the username and password combinations. Note RADIUS with Extensible Authentication Protocol (EAP) extensions is the only supported authentication server for this feature. Following are several terms to keep in mind when using this feature. Supplicant - A supplicant is an end user or end node that wants to access the network through a switch port. A supplicant is also referred to as a client. Authenticator - The authenticator is a port on the switch that prohibits network access by a supplicant until the network user has entered a valid username and password. Authentication server - The authentication server is the network device that has the RADIUS server software. This is the device that does the actual authenticating of the user names and passwords from the supplicants. The AT-9000/24 Gigabit Ethernet switch does not authenticate the usernames and passwords from the end users. Rather, the switch acts as an intermediary between a supplicant and the authentication server during the authentication process. 168 Section I: Using the Menus Interface

169 AT-S84 Management Software User s Guide Authentication Process Below is a brief overview of the authentication process that occurs between a supplicant, authenticator, and authentication server. For further details, refer to the IEEE 802.1x standard. Either the authenticator (that is, a switch port) or the supplicant can initiate an authentication prompt exchange. The switch initiates an exchange when it detects a change in the status of a port (such as when the port transitions from no link to valid link), or if it receives a packet on the port with a source MAC address not in the MAC address table. An authenticator starts the exchange by sending an EAP-Request/ Identity packet. A supplicant starts the exchange with an EAPOL-Start packet, to which the authenticator responds with a EAP-Request/ Identity packet. The supplicant responds with an EAP-Response/Identity packet to the authentication server via the authenticator. The authentication server responds with an EAP-Request packet to the supplicant via the authenticator. The supplicant responds with an EAP-Response/MDS packet containing a username and password. The authentication server sends either an EAP-Success packet or EAP-Reject packet to the supplicant. Upon successful authorization of the supplicant by the authentication server, the switch adds the supplicant s MAC address to the MAC address as an authorized address and begins forwarding network traffic to and from the port. When the supplicant sends an EAPOL-Logoff prompt, the switch removes the supplicant s MAC address from the MAC address table, preventing the supplicant from sending or receiving any further traffic from the port. Authenticator Ports All of the ports on the AT-9000/24 Gigabit Ethernet switch are authenticator ports. An authenticator port can have one of three settings. These settings are referred to as the port control settings. The settings are: Auto - Activates 802.1x authentication. An authenticator port with this setting does not forward network traffic to or from the end node until the client has entered a username and password that the authentication server must validate. The port begins in the unauthorized state, sending and receiving only EAPOL frames. All other frames, including multicast and broadcast frames, are discarded. The authentication process begins when the link state of the port changes or the port receives an EAPOL-Start packet from a supplicant. The switch requests the identity of the client and begins relaying authentication prompts between the client and the authentication Section I: Using the Menus Interface 169

170 24 Port Gigabit Ethernet Switch POWER R 23R R 24R PORT ACTIVITY /100 LINK SFP ACT Chapter 12: 802.1x Network Access Control server. Each client that attempts to access the network is uniquely identified by the switch using the client's MAC address. Force-unauthorized - Places the port in the unauthorized state, ignoring all attempts by the client to authenticate. This port control setting blocks all users from accessing the network through the port and is similar to disabling a port and can be used to secure a port from use. The port continues to forward EAPOL packets, but discards all other packets, including multicast and broadcast packets. Force-authorized - Disables IEEE 802.1x authentication and causes the port to transition to the authorized state without any authentication exchange required. The port transmits and receives normal traffic without 802.1x-based authentication of the client. This is the default setting. Use this port control setting for those ports where there are network devices that are not to be authenticated. Figure 46 illustrates the concept of the authenticator port control settings. Port x Port Control: Setting: Force-unauthorized AT-9000/24 Port x Port Control Setting: Auto Supplicant with 802.1x Client Software 793 Port x Port Control: Setting: Force-authorized RADIUS Authentication Server Figure 46. Example of the Authenticator Role Port 2 is set to Auto. The end node connected to the port must use its 802.1x client software and provide a username and password to send or receive traffic from the switch. Port 8 is set to the Force-authorized setting so that the end node connected to the port does not have to provide a user name or password to send or receive traffic from the switch. In the example, the node is the RADIUS authentication server. Since the server cannot authenticate itself, its port must be set to Force-authorized in order for it to pass traffic through the port. Port 7 is set to Force-unauthorized to prevent anyone for using the port. 170 Section I: Using the Menus Interface

171 AT-S84 Management Software User s Guide As mentioned earlier, the switch itself does not authenticate the user names and passwords from the clients. That is the responsibility of the authentication server, which contains the RADIUS server software. Instead, a switch acts as an intermediary for the authentication server by denying access to the network by the client until the client has provided a valid username and password, which the authentication server validates. General Steps Following are the general steps to implementing 802.1x Network Access Control: 1. You must install RADIUS server software on one or more of your network servers or management stations. Authentication protocol server software is not available from Allied Telesyn. 2. You need to install 802.1x client software on those workstations that are to be supplicants. 3. You must configure and activate the RADIUS client software in the AT-S84 management software. The default setting for the authentication protocol is disabled. You will need to provide the following information: The IP address of a RADIUS servers. The encryption key used by the authentication server. For instructions, refer to Chapter 13, RADIUS Authentication Protocol on page You must configure the authenticator port settings, as explained in Configuring 802.1x Network Access Control on page 174 in this chapter. Network Access Control Guidelines Following are the guidelines for using this feature: Ports set to Auto do not support port trunking or dynamic MAC address learning. The appropriate setting for a port on an AT-8000/8POE Fast Ethernet Switch connected to an authentication server is Force-authorized, the default setting. This is because an authentication server cannot authenticate itself. The authentication server must be a member of the Default VLAN by communicating with the switch through a port that is an untagged member of the Default VLAN. Allied Telesyn does not support connecting more than one supplicant to an authenticator port on the switch. The switch allows only one supplicant to log on per port. Section I: Using the Menus Interface 171

172 Chapter 12: 802.1x Network Access Control Note Connecting multiple supplicants to a switch port set to the Auto setting does not conform to the IEEE 802.1x standard. This can introduce security risks and can result in undesirable switch behavior. To avoid this, Allied Telesyn recommends use the Forceauthorized setting on those ports that are connected to more than one end node, such as a port connected to another switch or to a hub. A username and password combination is not tied to the MAC address of an end node. This allows end users to use the same username and password when working at different workstations. After a supplicant has successfully logged on, the MAC address of the end node is added to the switch s MAC address table as an authenticated address. It remains in the table until the end user logs off the network. The address is not timed out, even if the end node becomes inactive. Note End users of access control should be instructed to always log off when they are finished with a work session. This prevents unauthorized individuals from accessing the network through unattended network workstations. There should be only one port in the authenticator port control setting of Auto between a client and the authentication server. 172 Section I: Using the Menus Interface

173 24 Port Gigabit Ethernet Switch POWER R 23R R 24R 24 Port Gigabit Ethernet Switch POWER R 23R R 24R PORT ACTIVITY /100 LINK SFP PORT ACTIVITY ACT /100 LINK SFP ACT AT-S84 Management Software User s Guide Ports used to interconnect switches should be set to the port control setting of Force-authorized. This is illustrated in Figure 47. AT-9000/24 Switch A 793 Port 4: 802.1x Port Control Setting: Force-authorized Port 16: 802.1x Port Control Setting: Force-authorized Port 3: 802.1x Port Control Setting: Force-authorized RADIUS Authentication Server AT-9000/24 Switch B 793 Ports 6-20: 802.1x Port Control Setting: Auto Supplicants with 802.1x Client Software Figure 47. Authentication Across Multiple Switches Section I: Using the Menus Interface 173

174 Chapter 12: 802.1x Network Access Control Configuring 802.1x Network Access Control To configure 802.1x network access control, perform the following procedure: 1. From the Main Menu, type A to select Advanced Switch Configuration. The Advanced Switch Configuration Menu is shown in Figure 21 on page From the Advanced Switch Configuration Menu, type X to select 802.1x Port Based Access Control Configuration. The Port Based Access Control Configuration Menu is shown in Figure 48. AT-9000/24 Local Management System Advanced Switch Configuration -> Port Based Access Control Configuration Menu NAS ID : Nas1 Port No : 1 Port Status : Authorized Port Control : Force Authorized Transmission Period : 30 seconds Supplicant Timeout : 30 seconds Server Timeout : 30 seconds Maximum Request : 2 Quiet Period : 60 seconds Re-authentication Period : 3600 seconds Re-authentication Status : Disabled <COMMAND> [N]AS ID Server Time[o]ut [I]nitialize [P]ort No [M]aximum Request [R]e-auth Initialize Port [C]ontrol Q[u]iet Period [Q]uit to previous Page [T]ransmission Period R[e]-auth Period Supp[l]icant Timeout Re-[a]uth Status Command> Figure 48. Port Based Access Control Configuration Menu 174 Section I: Using the Menus Interface

175 AT-S84 Management Software User s Guide 3. Type P to select Port No. The following prompt is displayed: Enter port number> 4. Enter the number of the port on the switch you want to configure. You can configure only one port at a time. The Port Based Access Control Configuration Menu is updated with the current settings of the selected port. 5. Type N to select NAS ID. This parameter assigns an 802.1x identifier to the switch that applies to all ports. The NAS ID can be up to sixteen characters. Valid characters are 0 to 9, a to z, and A to Z. Spaces are allowed. Specifying an NAS ID is optional. The following prompt is displayed: Enter NAS ID > 6. Type a name for the NAS ID. Note Port Status displays the current status of the port as either authorized or unauthorized. This is not an adjustable parameter. 7. To configure the port control type, do the following: a. Type C to select Port Control. The following prompt is displayed: Select authenticator port control (A/U/F) > The options are: A (Auto) - Enables 802.1x authentication and causes the port to begin in the unauthorized state, allowing only EAPOL frames to be sent and received through the port. The authentication process begins when the link state of the port changes or the port receives an EAPOL-Start packet from a supplicant. The switch requests the identity of the client and begins relaying authentication prompts between the client and the authentication server. U (Force-unauthorized) - Causes the port to remain in the unauthorized state, ignoring all attempts by the client to authenticate. Section I: Using the Menus Interface 175

176 Chapter 12: 802.1x Network Access Control F (Force-authorized) - Disables IEEE 802.1x authentication and causes the port to transition to the authorized state without any authentication exchange required. The port transmits and receives normal traffic without 802.1x-based authentication of the client. This is the default setting. b. Type A, U, or F. 8. To configure the transmission period, do the following: a. Type T to select Transmission Period. The following prompt is displayed: Enter transmission period > This parameter sets the number of seconds that the switch waits for a response to an EAP-request/identity frame from the client before retransmitting the request. The default value is 30 seconds. The range is 1 to 65,535 seconds. b. Type a number for the transmission period. 9. To set the supplicant timeout, do the following: a. Type L to select Supplicant Timeout. The following prompt is displayed: Enter supplicant timeout value > This parameter sets the switch-to-client retransmission time for the EAP-request frame. The default value for this parameter is 30 seconds. The range is 1 to 600 seconds. b. Type a number for the supplicant timeout. 10. To set the server timeout, do the following: a. Type O to select Server Timeout. The following prompt is displayed: Enter transmission period > This parameter sets the timer used by the switch to determine authentication server timeout conditions. The default value for this parameter is 10 seconds. The range is 1 to 60 seconds. b. Type a number for the server timeout. 11. To set the maximum number of requests, do the following: a. Type M to select Maximum Request. 176 Section I: Using the Menus Interface

177 AT-S84 Management Software User s Guide The following prompt is displayed: Enter maximum request count > This parameter sets the maximum number of times that the switch retransmits an EAP Request packet to the client before it times out the authentication session. The default value for this parameter is 2 retransmissions. The range is 1 to 10 retransmissions. b. Type a number for the maximum request count. 12. To configure the quiet period, do the following: a. Type U to select Quiet Period. The following prompt is displayed: Enter quiet period > This parameter sets the number of seconds that the port remains in the quiet state following a failed authentication exchange with the client. The default value is 60 seconds. The range is 0 to 65,535 seconds. b. Enter a number for the quiet period. 13. To configure the reauthentication period, do the following: a. Type E to select Re-Auth Period. The following prompt is displayed: Enter re-authentication period > This parameter specifies the time period between periodic reauthentication of the client. The default value is 3600 seconds. The range is 1 to 65,535 seconds. b. Enter a number for the re-authentication period. 14. To enable or disable reauthentication, do the following: a. Type A to select Re-Auth Status. The following prompt is displayed: Enable or Disable re-authentication? (E/D) > This parameter specifies if reauthentication should occur according to the reauthentication period. The options are Enabled or Disabled. b. Type E to enable reauthentication or D to disable reauthentication. Section I: Using the Menus Interface 177

178 Chapter 12: 802.1x Network Access Control 15. If the port control setting is Auto and you want to return the EAPOL machine state on the port to the initialized state, do the following: a. Type I to select Initialize. The following prompt is displayed: Would you initialize authenticator? (Y/N)> b. Typing Y returns the EAPOL machine state on the port to the initialize state. Typing N cancels the step. 16. If the port control setting is Auto and you want the node connected to the port to reauthenticate with the RADIUS server, do the following: a. Type R to select Re-auth Initialize. The following prompt is displayed: Initialize re-authentication? (Y/N)> b. Typing Y returns the port to the unauthenticated state and the reauthentication period to zero. The user must enter a valid username and password to continue to use the switch port. Typing N cancels the reauthentication. 178 Section I: Using the Menus Interface

179 Chapter 13 RADIUS Authentication Protocol This chapter describes how to configure the RADIUS client software on the switch. You can use the RADIUS client with 802.1x network access control to control who can forward packets through the switch. Sections in the chapter include: RADIUS Overview on page 180 Configuring the RADIUS Server on page 181 Displaying the RADIUS Server Settings on page 183 Section I: Using the Menus Interface 179

180 Chapter 13: RADIUS Authentication Protocol RADIUS Overview RADIUS (Remote Authentication Dial In User Services) is an authentication protocol for enhancing the security of your network. The protocol transfers the task of authenticating network access from a network device to an authentication protocol server. The AT-S84 management software comes with RADIUS client software. You can use the client software together with 802.1x network access control, described in Chapter 12, 802.1x Network Access Control on page 167, to control which end users and end nodes can send packets through the switch. RADIUS Implementation Guidelines What do you need to use the RADIUS protocol? Following are the main points. You must install RADIUS server software on a network server or management station. Authentication protocol server software is not available from Allied Telesyn. The RADIUS server must be communicating with the switch through a port that is an untagged member of the Default VLAN. If the RADIUS server is on a different subnet from switch, be sure to specify a default gateway in the System IP Configuration Menu, shown in Figure 5 on page 33, so that the switch and server can communicate with each other. You need to configure the RADIUS server software on the authentication server by specifying the username and password combinations. The maximum length of a username or password is 12 alphanumeric characters. Note This manual does not explain how to configure RADIUS server software. Refer to the documentation that came with the software for instructions. You must activate the RADIUS client software on the switch using the AT-S84 management software and configure the settings. This is explained in Configuring the RADIUS Server on page 181. By default, authentication protocol is disabled. Note For more information on the RADIUS authentication protocol, refer to the RFC 2865 standard. 180 Section I: Using the Menus Interface

181 AT-S84 Management Software User s Guide Configuring the RADIUS Server To configure the RADIUS client, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type U to select User Interface Configuration. The User Interface Configuration Menu is shown in Figure 7 on page Type R to select RADIUS Server Configuration. The RADIUS Server Configuration Menu is shown in Figure 49. AT-9000/24 Local Management System Basic Switch Configuration -> RADIUS Server Configuration Menu Server IP Address : Shared Secret : Response Time : 10 seconds Maximum Retransmission : <COMMAND> Set Server [I]P Set Shared Se[c]ret Set [R]esponse Time Set [M]ax Retransmission [Q]uit to previous menu Command> Figure 49. RADIUS Server Configuration Menu 4. To set the RADIUS server s IP address, do the following: a. Type I to select Set Server IP. The following prompt is displayed: Enter IP address for RADIUS server> b. Type the IP address of the RADIUS server and press Enter. 5. To configure the shared secret, do the following: Section I: Using the Menus Interface 181

182 Chapter 13: RADIUS Authentication Protocol a. Type C to select Shared Secret. The following prompt is displayed: Enter secret string for server> b. Enter the encryption key of the RADIUS server. 6. To set the response time, do the following: a. Type R to select Set Response Time. The following prompt is displayed: Enter response time> b. Enter the amount of time in seconds the switch should wait for a response from the RADIUS server. The range is 1 to 120 seconds. The default is 10 seconds. 7. To configure the maximum retransmissions, do the following: a. Type M to select Max Retransmission. The following prompt is displayed: Enter maximum retransmissions> b. Enter the number of times the switch should retransmit to the RADIUS server in the event that the server does not respond. The range is 1 to 254. The default is Section I: Using the Menus Interface

183 AT-S84 Management Software User s Guide Displaying the RADIUS Server Settings To display the RADIUS client status and settings, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type U to select User Interface Configuration. The User Interface Configuration Menu is shown in Figure 7 on page Type R to select RADIUS Server Configuration. The RADIUS Server Configuration Menu is shown in Figure 49 on page 181. The top of the menu shows the current RADIUS server configuration. Section I: Using the Menus Interface 183

184 Chapter 13: RADIUS Authentication Protocol 184 Section I: Using the Menus Interface

185 Chapter 14 Broadcast Storm Control This chapter describes how to configure the broadcast storm control feature on the switch and includes the following sections: Broadcast Storm Control Overview on page 186 Configuring Broadcast Storm Control on page 187 Section I: Using the Menus Interface 185

186 Chapter 14: Broadcast Storm Control Broadcast Storm Control Overview The broadcast storm control feature limits the number of broadcast frames forwarded by the switch. The feature can help improve network performance in situations where broadcast frames are consuming a significant portion of network bandwidth, to a degree where the remaining bandwidth is insufficient for efficiently carrying the unicast and multicast frames. This feature can also protect your network from broadcast storms. Broadcast storms commonly occur when an Ethernet network topology contains a loop and where the Spanning Tree Protocol is not implemented. Ethernet frames become caught in repeating cycles that needlessly consume network bandwidth. The default setting for this feature is disabled. In the default setting, the switch forwards all ingress broadcast frames, provided that ports are not over-subscribed. When you enable the feature, you are given three threshold levels from which to choose. The levels prescribe the maximum number of ingress broadcast frames the switch will accept per second. Broadcast frames that exceed the limit are discarded. The level are: High: 3000 broadcast packets per second Medium: 500 broadcast packets per second Low: 100 broadcast packets per second For example, activating the feature and selecting Medium as the threshold means that the switch accepts up to a maximum of 500 ingress broadcast packets per second and discards those broadcast packets that exceed the limit. 186 Section I: Using the Menus Interface

187 AT-S84 Management Software User s Guide Configuring Broadcast Storm Control To configure the broadcast storm control feature, perform the following procedure: 1. From the Main Menu, type B to select Basic Switch Configuration. The Basic Switch Configuration Menu is shown in Figure 4 on page From the Basic Switch Configuration Menu, type C to select Storm Control Configuration. The Storm Control Configuration Menu is shown in Figure 50. AT-9000/24 Local Management System Basic Switch Configuration -> Storm Control Configuration Menu Broadcast Storm Status : Disabled Threshold : Low <COMMAND> Set [B]roadcast Status Set [T]hreshold [Q]uit to previous menu Command> Figure 50. Storm Control Configuration Menu 3. Type B to select Broadcast Storm Status. The following prompt is displayed: Enable or Disable broadcast storm control (E/D)> 4. Type E to enable broadcast storm control or D to disable broadcast storm control. 5. If you are activating the feature, type T to select Threshold. The following prompt is displayed: Enter threshold level> 6. Specify the broadcast threshold. Choices are: H for High (3000 broadcast packets per second) M for Medium (500 broadcast packets per second) Section I: Using the Menus Interface 187

188 Chapter 14: Broadcast Storm Control L for Low (100 broadcast packets per second) 188 Section I: Using the Menus Interface

189 Chapter 15 Working With System Files The procedures in this chapter explain how to download a new version of the AT-S84 management software onto the switch, and how to download or upload the configuration file. The sections are: Downloading a New Management Software Image Using TFTP on page 190 Uploading or Downloading a Configuration File on page 193 Note For information on how to obtain new releases of the AT-S84 management software, refer to Management Software Updates on page 15. Section I: Using the Menus Interface 189

190 Chapter 15: Working With System Files Downloading a New Management Software Image Using TFTP Before downloading a new version of the AT-S84 management software onto the switch, note the following: The current configuration of a switch is retained when a new AT-S84 software image is installed. To return a switch to its default configuration values, refer to Returning the AT-S84 Management Software to the Factory Default Values on page 57. To download a different configuration file, refer to Uploading or Downloading a Configuration File on page 193. Your network must have a node with TFTP server software. You must store the new AT-S84 image file on the TFTP server. You should start the TFTP server software before you begin the download procedure. The switch where you are downloading the new image file must have an IP address and subnet mask. For instructions on how to configure the IP address on a switch, refer to Configuring the IP Address, Subnet Mask, and Gateway Address on page 32 or Enabling and Disabling the DHCP Client on page 35. Caution Downloading a new version of management software onto the switch causes the device to reset. Some network traffic may be lost during the reset process. The following procedure assumes you have already obtained the new software from Allied Telesyn, stored it on the TFTP server, and specified a path to the new software in the TFTP configuration. To download the AT-S84 image software onto the switch, perform the following procedure: 1. From the Main Menu, type T to select Switch Tools. The Switch Tools Configuration Menu is shown in Figure 11 on page From the Switch Tools Menu, type U to select Software Upgrade. 190 Section I: Using the Menus Interface

191 AT-S84 Management Software User s Guide The Software Upgrade Menu is shown in Figure 51. AT-9000/24 Local Management System Switch Tools Configuration -> Software Upgrade Menu [T]FTP Software Upgrade [Q]uit to previous menu Command> Figure 51. Software Upgrade Menu (1 of 2) 3. Type T to select TFTP Upgrade. The Software Upgrade Menu (2 of 2) is shown in Figure 52. AT-9000/24 Local Management System Main Menu -> Software Upgrade Menu Image Version/Date: 0.0.0/Jul :57:07 TFTP Server IP: Image File Name: Retry Count: <COMMAND> Set TFTP [S]erver IP Address Set Image [F]ile Name [U]pgrade Image and Reboot Set [R]etry Count [Q]uit to previous menu Command> Figure 52. Software Upgrade Menu (2 of 2) Section I: Using the Menus Interface 191

192 Chapter 15: Working With System Files 4. Type S to select Set TFTP Server IP Address. The following prompt is displayed: Enter IP address of TFTP server: 5. Type the IP address of the TFTP server and press Enter. 6. Type F to select Set Image File Name. The following prompt is displayed: Enter file name> 7. Enter the file name of the AT-S84 image file on the TFTP server and press Enter. 8. Type R to select Set Retry Count. The following prompt is displayed: Enter retry count> 9. Enter the number of times you want the switch to retry in the event a problem occurs during the download process. The range is 1 to 20, and the default is 5 times. 10. To begin the download, type U to select Upgrade Image and Reboot. The following prompt is displayed: Download file? (Y/N)> 11. Type Y for yes to begin the upgrade or N for no to cancel the procedure. If you select yes, the software immediately begins to download the file onto the switch. After the software download is complete, the switch initializes the software and reboots. You will lose your local management connection to the switch during the reboot process. Note Do not interrupt the file download and reboot processes. 192 Section I: Using the Menus Interface

193 AT-S84 Management Software User s Guide Uploading or Downloading a Configuration File The procedure in this section allows you to download a different configuration file onto the switch from a TFTP server, or upload the file to a TFTP server. To return a switch to its default configuration values, refer to Returning the AT-S84 Management Software to the Factory Default Values on page 57. Before downloading a configuration file onto the switch, note the following: Your network must have a node with TFTP server software. You must store the new configuration file on the TFTP server. You should start the TFTP server software before you begin the procedure. The switch where you are downloading the configuration file must have an IP address and subnet mask. For instructions on how to configure the IP address on a switch, refer to Configuring the IP Address, Subnet Mask, and Gateway Address on page 32 or Enabling and Disabling the DHCP Client on page 35. When you download a new configuration file onto the switch, the new file overrides the current file and the current file is lost unless you uploaded it to a TFTP server before you replaced it. Note The configuration file contains only those settings that have been changed since the switch was last reset to the default settings. Uploading the Configuration File To upload the switch s configuration file onto a TFTP server, perform the following procedure: 1. From the Main Menu, type T to select Switch Tools. The Switch Tools Configuration Menu is shown in Figure 11 on page From the Switch Tools Menu, type C to select Configuration File Upload/Download. Section I: Using the Menus Interface 193

194 Chapter 15: Working With System Files The Configuration File Upload/Download menu is shown in Figure 53. AT-9000/24 Local Management System Switch Tools Configuration -> Configuration File Upload/Download Menu [T]FTP Configuration File Upload/Download [Q]uit to previous menu Command> Figure 53. Configuration File Upload/Download Menu 3. From the Configuration File Upload/Download menu, type T to select TFTP Configuration File Upload/Download. The TFTP Configuration File Upload/Download menu is shown in Figure 54. AT-9000/24 Local Management System Configuration File Upload/Download -> TFTP Configuration File Upload/Download TFTP Server IP: Config File Name: Retry Count: <COMMAND> Set TFTP [S]erver IP Address Set Configuration [F]ile Name [U]pload Configuration File [D]ownload Configuration File Set [R]etry Count [Q]uit to previous menu Command> Figure 54. TFTP Configuration File Upload/Download Menu 4. Type S to select Set TFTP Server IP Address. The following prompt is displayed: Enter IP address of TFTP server: 194 Section I: Using the Menus Interface

195 AT-S84 Management Software User s Guide 5. Type the IP address of the TFTP server and press Enter. 6. Type F to select Set Configuration File Name. The following prompt is displayed: Enter file name> 7. Enter the file name of the switch configuration file on the TFTP server and press Enter. Note There is no default name for the configuration file. 8. Type R to select Set Retry Count. The following prompt is displayed: Enter retry count> 9. Enter the number of times you want the switch to retry in the event a problem occurs during the download process. The range is 1 to 20. The default is 5 times. 10. To begin the upload, type U to select Upload Configuration File. The following prompt is displayed: Upload file? (Y/N)> 11. Type Y for yes to begin the uploading or N for no to cancel the procedure. Downloading a Configuration File To download a configuration file onto the switch from a TFTP server, perform the following procedure: 1. From the Main Menu, type T to select Switch Tools. The Switch Tools Configuration Menu is shown in Figure 11 on page From the Switch Tools Menu, type C to select Configuration File Upload/Download. The Configuration File Upload/Download menu is shown in Figure 53 on page From the Configuration File Upload/Download menu, type T to select TFTP Configuration File Upload/Download. Section I: Using the Menus Interface 195

196 Chapter 15: Working With System Files The TFTP Configuration File Upload/Download menu is shown in Figure 54 on page Type S to select Set TFTP Server IP Address. The following prompt is displayed: Enter IP address of TFTP server: 5. Type the IP address of the TFTP server and press Enter. 6. Type F to select Set Configuration File Name. The following prompt is displayed: Enter file name> 7. Enter the file name of the switch configuration file on the TFTP server and press Enter. Note There is no default name for the configuration file. 8. Type R to select Set Retry Count. The following prompt is displayed: Enter retry count> 9. Enter the number of times you want the switch to retry in the event a problem occurs during the download process. The range is 1 to 20. The default is 5 times. 10. To begin the download, type D to select Download Configuration File. The following prompt is displayed: Download file? (Y/N)> 11. Type Y for yes to begin the downloading or N for no to cancel the procedure. After the downloading is complete, reset the switch to implement the new settings. 196 Section I: Using the Menus Interface

197 Section II Using the Web Browser Interface The chapters in this section provide information and procedures for using the web browser interface in the AT-S84 management software. The chapters include: Chapter 16, Starting a Web Browser Management Session on page 199 Chapter 17, Basic Switch Parameters on page 205 Chapter 18, Port Configuration on page 229 Chapter 19, SNMP on page 239 Chapter 20, Port Trunking on page 243 Chapter 21, Port Mirroring on page 251 Chapter 23, Power Over Ethernet on page 235 Chapter 22, Virtual LANs on page 255 Chapter 23, Quality of Service (QoS) on page 267 Chapter 24, IGMP on page 273 Chapter 25, RSTP on page 277 Chapter 26, 802.1x Network Access Control on page 289 Chapter 27, RADIUS Authentication Protocol on page 293 Chapter 28, Broadcast Storm Control on page 295 Chapter 29, Working with System Files on page 297 Note The menus interface is described in Section I, Using the Menus Interface on page 23, and the command line interface is described in Section III, Using the Command Line Interface on page 303. Section II: Using the Web Browser Interface 197

198 198 Section II: Using the Web Browser Interface

199 Chapter 16 Starting a Web Browser Management Session This chapter contains the procedures for starting, using, and quitting a web browser management session on an AT-9000/24 Gigabit Ethenet switch. Sections in the chapter include: Establishing a Remote Connection to Use the Web Browser Interface on page 200 Web Browser Tools on page 203 Quitting a Web Browser Management Session on page 204 Section II: Using the Web Browser Interface 199

200 Chapter 16: Starting a Web Browser Management Session Establishing a Remote Connection to Use the Web Browser Interface In order for you to manage a switch using the web browser interface, the switch must have an IP address and subnet mask. To manually assign an IP address, refer to Configuring the IP Address, Subnet Mask, and Gateway Address on page 32. To configure the switch to obtain its IP configuration from a DHCP server, refer to Enabling and Disabling the DHCP Client on page 35. The initial assignment of an IP address must be made through a local management session. Note Enhanced stacking, a feature of other Allied Telesyn Layer 2 and Layer 2+ managed switches, is not supported by the AT-9000/24 Gigabit Ethenet switch. Note The remote management station must be a member of the switch s Default VLAN. The switch responds and processes management packets only if they are received on an untagged port of the Default VLAN. To start a web browser management session, perform the following procedure: 1. Start your web browser. Note If your PC with the web browser is connected directly to the switch to be managed or is on the same side of a firewall as the switch, you must configure your browser s network options not to use proxies. Consult your web browser s documentation on how to configure the switch s web browser to not use proxies. 2. In the URL field of the browser, enter the IP address of the switch to be managed. Switch s IP Address Figure 55. Entering a Switch s IP Address in the URL Field 200 Section II: Using the Web Browser Interface

201 AT-S84 Management Software User s Guide The AT-S84 management software displays the login dialog box, shown in Figure 56. Figure 56. AT-S84 Login Dialog Box 3. Enter the AT-S84 management login user name and password. The default user name is manager and the default password is friend. The login name and password are case-sensitive. To change the user name and password, refer to Configuring System Administration Information on page 209. The AT-S84 management software displays the home page. The window contains an image of the front of the switch. Ports that have a link to an end node are green. Ports without a link are grey. An example of a home page is shown in Figure 57. Figure 57. Home Page for the AT-9000/24 Gigabit Ethernet Switch Section II: Using the Web Browser Interface 201

202 Chapter 16: Starting a Web Browser Management Session The main menu is on the top of the home page. It consists of the following selections: General Info. Basic Config. Advanced Config. Tools Statistics A web browser management session remains active even if you link to other sites. You can return to the management web pages anytime as long as you do not quit the browser. 202 Section II: Using the Web Browser Interface

203 AT-S84 Management Software User s Guide Web Browser Tools You can use the web browser tools to move around the management pages. Selecting Back on your browser s toolbar returns you to the previous display. You can also use the browser s bookmark feature to save the link to the switch. Section II: Using the Web Browser Interface 203

204 Chapter 16: Starting a Web Browser Management Session Quitting a Web Browser Management Session To exit a web browser management session, close the web browser. 204 Section II: Using the Web Browser Interface

205 Chapter 17 Basic Switch Parameters This chapter contains the following sections: Configuring an IP Address, Subnet Mask and Gateway Address on page 206 Enabling and Disabling the DHCP Client on page 208 Configuring System Administration Information on page 209 Setting the User Interface Configuration on page 211 Enabling or Disabling the Web Server on page 215 Enabling or Disabling the Telnet Server on page 216 Configuring SNTP on page 217 Viewing System Information on page 218 Rebooting a Switch on page 221 Pinging a Remote System on page 223 Viewing the System Log on page 225 Returning the AT-S84 Management Software to the Factory Default Values on page 227 Section II: Web Browser Interface 205

206 Chapter 17: Basic Switch Parameters Configuring an IP Address, Subnet Mask and Gateway Address This procedure explains how to change the IP address, subnet mask, and gateway address of the switch. Before performing the procedure, note the following: An IP address and subnet mask are not required for normal network operations of the switch. Values for these parameters are only required if you want to remotely manage the device using the web browser interface. A gateway address is only required if you want to remotely manage the device from a remote management station that is separated from the switch by a router. To configure the switch to automatically obtain its IP configuration from a DHCP server on your network, go to Enabling and Disabling the DHCP Client on page 208. You must use the menus interface to manually assign an IP address to the switch, as described in Configuring an IP Address, Subnet Mask and Gateway Address on page 206. To change the switch s IP configuration, perform the following procedure: 1. From the Basic Config menu, select IP Config. The IP Configuration page is shown in Figure 58. Figure 58. IP Configuration Page 2. Change the IP configuration parameters by entering new information in the fields: 206 Section II: Web Browser Interface

207 AT-S84 Management Software User s Guide System MAC Address This parameter displays the MAC address of the switch. You cannot change this parameter. System IP Address Enter the IP address for the switch. System Subnet Mask Enter the subnet mask for the switch. System Default Gateway Enter the default gateway s IP address. DHCP Mode For information about setting this parameter, refer to Enabling and Disabling the DHCP Client on page Click Apply. Note Changing the IP address ends your management session. To resume managing the device, enter the new IP address of the switch in the web browser s URL field, as shown in Figure 55 on page 200. Section II: Web Browser Interface 207

208 Chapter 17: Basic Switch Parameters Enabling and Disabling the DHCP Client This procedure explains how to activate and deactivate the DHCP client on the switch. When the client is activated, the switch obtains its IP configuration, such as its IP address and subnet mask, from a DHCP server on your network. Before performing the procedure, note the following: An IP address and subnet mask are not required for normal network operations of the switch. Values for these parameters are only required if you want to remotely manage the device with a web browser. A gateway address is only required if you want to remotely manage the device from a remote management station that is separated from the switch by a router. The DHCP client is disabled by default on the switch. The DHCP client does not support BOOTP. You must assign an IP address initially through a local management session using the menus interface. To activate or deactivate the DHCP client on the switch, perform the following procedure: 1. From the Basic Config menu, select IP Config. The IP Configuration page is shown in Figure 58 on page For the DHCP Mode, select Enable or Disable. 3. Click Apply. When you enable DHCP, the switch immediately begins to send queries to the DHCP server. It continues to send queries until it receives a response with its new IP address. Note Enabling DHCP ends your web browser management session. To resume managing the switch, use a local connection and the menus interface to view the IP address assigned by the DHCP server. Then, enter that address in a web browser s URL field. 208 Section II: Web Browser Interface

209 AT-S84 Management Software User s Guide Configuring System Administration Information This section explains how to assign a name to the switch, as well as the location of the switch and the name of the switch s administrator. Entering this information is optional. To set a switch s administration information, perform the following procedure: 1. From the Basic Config menu, select Admin. Config. The Administration Configuration page is shown in Figure 59. Figure 59. Administration Configuration Page 2. Configure the following parameters as necessary: System Description Specifies the model number of the switch. You cannot change this parameter. System Name Specifies a name for the switch, for example, Sales. The name is optional and may contain up to 50 characters. Section II: Web Browser Interface 209

210 Chapter 17: Basic Switch Parameters Note Allied Telesyn recommends that you assign a name to the switch. A name can help you identify the switch when you manage it and can also help you avoid performing a configuration procedure on the wrong switch. System Location Specifies the location of the switch. The location is optional and may contain up to 50 characters. System Contact Specifies the name of the network administrator responsible for managing the switch. This contact name is optional and may contain up to 50 characters. 3. Click Apply. 210 Section II: Web Browser Interface

211 AT-S84 Management Software User s Guide Setting the User Interface Configuration This procedure explains how to adjust the user interface and security features on the switch. With this procedure you can: Change the console timer, used to automatically end inactive local management sessions. Change the AT-S84 management login user name and password. Enable and disable the web server, used to manage the switch from a remote management station with a web browser. To set the switch s user interface configuration, perform the following procedure: 1. From the Basic Config menu, select User Interface. 2. From the User Interface menu, select User Interface. The other selection on this menu, RADIUS, is described in Chapter 27, RADIUS Authentication Protocol on page 293. Section II: Web Browser Interface 211

212 Chapter 17: Basic Switch Parameters The User Interface page is shown in Figure 60. Figure 60. User Interface Page The User Interface page has three parts: Console and Telnet UI Idle Time Out settings Server and SNMP settings User name and password settings Note For information about the SNMP Agent selection, refer to Enabling or Disabling the SNMP Agent on page To configure the console UI time out parameters, do the following: a. In the Console UI Time Out field, enter a new value. 212 Section II: Web Browser Interface

213 AT-S84 Management Software User s Guide The range is 0 to 60 minutes. The default is 5 minutes. A timeout value of 0 causes the console connection to never times out. The console idle time out parameter specifies the length of time a local management session can be inactive before the management software automatically ends it. The purpose of this parameter is to prevent unauthorized individuals from configuring the switch should you leave your management workstation unattended. This parameter applies to a local management session but not to a web management session. A web browser management session remains active so long as your web browser is open. Note If you select 0, you must remember to properly log off from a local management session when you are finished to prevent blocking future management sessions with the switch. b. Click Apply. 4. To configure the Telnet UI timeout value, do the following: a. In the Telnet UI Time Out field, enter a new value. The Telnet idle time out parameter specifies the length of time that a remote Telnet management session can be inactive before the management software automatically ends it. 5. To change the user settings, do the following: a. Enter the existing name and password in the User Name and Password fields. The default name and password are both manager. The login name and password are case sensitive. b. Click the New User Name field and enter a new user name or, if you do not want to change the login name, enter the current name. Leaving this field empty deletes the current login name without assigning a new one. The name can be from 0 to 12 characters. Spaces are allowed. The login name is case sensitive. c. Click the New Password field and enter a new login password or, if you do not want to change the password, enter the current password. The password can be from 0 to 12 characters. Allied Telesyn recommends not using special characters, such as spaces and exclamation points. The password is case sensitive. Leaving this field empty deletes the current password without assigning a new one. d. Click the Verify New Password field and enter the same password entered in the previous step. Section II: Web Browser Interface 213

214 Chapter 17: Basic Switch Parameters e. Click Apply. 214 Section II: Web Browser Interface

215 AT-S84 Management Software User s Guide Enabling or Disabling the Web Server To enable or disable the web server, perform the following procedure: 1. From the Basic Config menu, select User Interface. 2. From the User Interface menu, select User Interface. The User Interface page is shown in Figure 60 on page For the Web Server parameter, choose Enable or Disable from the list. The default is Enable. When you enable this parameter, an individual can manage the switch remotely using a web browser. Note Disabling the web server automatically ends your remote management session. 4. Click Apply. Section II: Web Browser Interface 215

216 Chapter 17: Basic Switch Parameters Enabling or Disabling the Telnet Server To enable or disable the Telnet server, perform the following procedure: 1. From the Basic Config menu, select User Interface. 2. From the User Interface menu, select User Interface. The User Interface page is shown in Figure 60 on page For the Telnet Server parameter, choose Enable or Disable from the list. The default is Enable. When you enable this parameter, a Telnet connection to the switch is available. 4. Click Apply. 216 Section II: Web Browser Interface

217 AT-S84 Management Software User s Guide Configuring SNTP To configure SNTP, perform the following procedure: 1. From the Basic Configuration menu, select SNTP Configuration. The SNTP Configuration page is shown in Figure 61. Figure 61. SNTP Configuration Page 2. In the SNTP Server IP field, type the IP address for the SNTP server you want to use. 3. In the Set SNTP Interval field, type a number to specify the number of minutes between occurrences of polling the SNTP server. The range is 1 to 60 minutes and the default is 1 minute. 4. To set the time zone, select one from the Time Zone list. 5. For the Daylight Saving parameter, choose one of the following from the list: Disabled - To disable daylight saving time. Enabled - To disable daylight saving time. 6. Click Apply. Section II: Web Browser Interface 217

218 Chapter 17: Basic Switch Parameters Viewing System Information To view general information about the switch, perform the following procedure: 1. From General Info. menu, select Switch Info. The Switch Information page is shown in Figure 62. Figure 62. Switch Information Page The Switch Information page displays the following information: System Up For The number of days, hours, and minutes that the switch has been running since it was last rebooted. Runtime Image The version number and build date of the runtime firmware. 218 Section II: Web Browser Interface

219 AT-S84 Management Software User s Guide Boot Loader The version number and build date of the bootloader firmware. Hardware Information Section: Revision The hardware version number. DRAM Size The size of the DRAM, in megabytes. Flash Size The size of the flash memory, in megabytes. Console Baud Rate The baud rate of the console port. You cannot change this setting. Administration Information Section: System Name The name assigned to the switch. To give the switch a name, refer to Configuring System Administration Information on page 209. System Location The location of the switch. To specify the location, refer to Configuring System Administration Information on page 209. System Contact The contact person responsible for managing the switch. To specify the name of a contact, refer to Configuring System Administration Information on page 209. System MAC Address, IP Address, Subnet Mask, and Gateway Section: MAC Address The MAC address of the switch. You cannot change this value. IP Address The IP address of the switch. Refer to Configuring an IP Address, Subnet Mask and Gateway Address on page 206 to manually assign an IP address or Enabling and Disabling the DHCP Client on page 208 to activate the DHCP client. Subnet Mask The subnet mask for the switch. Refer to Configuring an IP Address, Subnet Mask and Gateway Address on page 206 to manually assign a subnet mask or Enabling and Disabling the DHCP Client on page 208 to activate the DHCP client. Default Gateway Default gateway s IP address. Refer to Configuring an IP Address, Subnet Mask and Gateway Address on page 206 to manually assign Section II: Web Browser Interface 219

220 Chapter 17: Basic Switch Parameters a gateway address or Enabling and Disabling the DHCP Client on page 208 to activate the DHCP client. DHCP Mode The status of the DHCP client on the switch. For information about setting this parameter, refer to Enabling and Disabling the DHCP Client on page Section II: Web Browser Interface

221 AT-S84 Management Software User s Guide Rebooting a Switch This procedure reboots the switch and reloads the AT-S84 management software from flash memory. You might reboot the device if you believe it is experiencing a problem. Rebooting the device does not change any of the device s parameter settings. Caution The switch does not forward network traffic during the reboot process. Some network traffic may be lost. To reboot a switch, perform the following procedure: 1. From the Tools menu, select System Reboot. The System Reboot Configuration page is shown in Figure 63. Figure 63. System Reboot Configuration Page 2. For the Reboot Type, select Normal Reset. This is the default setting. Note The two other Reboot Type options, Reset to Factory Default and Reset to Factory Default Except IP Address, are described in Returning the AT-S84 Management Software to the Factory Default Values on page For the Reboot Status, select Start to start the reboot. 4. Click Apply. Section II: Web Browser Interface 221

222 Chapter 17: Basic Switch Parameters The switch immediately begins to reload the AT-S84 management software. This process takes approximately one minute to complete. You can not manage the device during the reboot. After the reboot is finished, you can log in again if you want to continue to manage the device. 222 Section II: Web Browser Interface

223 AT-S84 Management Software User s Guide Pinging a Remote System This procedure instructs the switch to ping a node on your network. This procedure is useful in determining whether an active link exists between the switch and another network device. Note the following before performing the procedure: The switch where you are initiating the ping must have an IP address. The device you are pinging must be a member of the Default VLAN. This means that the port on the switch through which the node is communicating with the switch must be an untagged or tagged member of the Default VLAN. To ping a network device, perform the following procedure: 1. From the Tools menu, select Ping. The Ping Test Configuration page is shown in Figure 64. Figure 64. Ping Test Configuration Page 2. Configure the following parameters: Destination IP Address The IP address of the node you want to ping. Timeout Value Specifies the length of time in seconds the switch waits for a response before assuming that a ping has failed. The default is 3 seconds. Section II: Web Browser Interface 223

224 Chapter 17: Basic Switch Parameters Number of Ping Requests Specifies the number of ping requests you want the switch to perform. The default is Click Start. 4. To view the ping results, click Show Ping Results. A sample Ping Test Results page is shown in Figure 65. Figure 65. Ping Test Results Page 5. Click Back to Ping Test to return to the Ping Test Configuration page. 224 Section II: Web Browser Interface

225 AT-S84 Management Software User s Guide Viewing the System Log The system log displays system-level events in the switch, such as logging in to the management software. To view the system log, perform the following procedure: 1. From the Tools menu, select System Log. The System Log page is shown in Figure 66. Figure 66. System Log Page The System Log page contains a table that displays the following information: Section II: Web Browser Interface 225

226 Chapter 17: Basic Switch Parameters ID An indentifying number for the event. Date Time The date that the event occurred Time The time that the event occurred L Severity level of the event. The severity levels are: (I)nformation - Useful information that you can ignore during normal operation. (W)arning - An issue that may require a manager s attention. (E)rror - Switch operation is severely impaired. Type The type provides more information about the event. The possible types are: 802.1X - An 802.1X event. CFG - Configuration event. CLI - CLI login. Console - A console login by a user. IP - Change to the IP information. PCFG - Port configuration. PoE - PoE configuration or event. SNTP - SNTP configuration. STP - Spanning tree. SwUpg - Software upgrade. System - General system event. Telnet - Access via Telnet. Description A description of the event. 2. To remove the current log entries, click Clear All. To refresh the log, click Refresh. 226 Section II: Web Browser Interface

227 AT-S84 Management Software User s Guide Returning the AT-S84 Management Software to the Factory Default Values This procedure returns all AT-S84 management software parameters to their default values and deletes all tagged and VLANs on the switch. The AT-S84 management software default values are listed in Appendix A, AT-S84 Default Settings on page 319. Caution This procedure causes the switch to reboot. The switch does not forward network traffic during the reboot process. Some network traffic may be lost. To return the AT-S84 management software to the default settings, perform the following procedure: 1. From the Tools menu, select System Reboot. The System Reboot Configuration page is shown in Figure 63 on page For the Reboot Type, select one of the following: Reset to Factory Default Resets all switch parameters to the factory default settings, including IP address, subnet mask, and gateway address. Reset to Factory Default Except IP Address Resets all switch parameters to the factory default settings, but retains the IP address, subnet mask, and gateway settings. If the DHCP client is enabled, it remains enabled after this reset. 3. For the Reboot Status, select Start to start the reboot. 4. Click Apply. The switch is rebooted. You must wait for the switch to complete the reboot process before reestablishing your management session. Section II: Web Browser Interface 227

228 Chapter 17: Basic Switch Parameters 228 Section II: Web Browser Interface

229 Chapter 18 Port Configuration The sections in this chapter explain the two methods to viewing and changing the parameter settings of the individual ports on the switch. The first method shows how to use the Port Configuration page to view and configure multiple ports at one time. The second is typically used to configure just one port at a time. There is also a section for viewing port statistics. The sections are: Viewing and Configuring Multiple Ports on page 230 Viewing and Configuring a Single Port on page 233 Displaying Port Statistics on page 236 Section II: Web Browser Interface 229

230 Chapter 18: Port Configuration Viewing and Configuring Multiple Ports This procedure allows you to configure the ports on the switch using the Port Configuration page. This page allows you to view and configure the parameter settings of all the switch ports at one time. To configure the ports, perform the following procedure: 1. From the Basic Config menu, select Port Config. The Port Configuration page is shown in Figure 67. The page lists all the ports on the switch and their current settings. Figure 67. Port Configuration Page 2. Adjust the port settings as needed. Not all parameters are adjustable. The parameters are: 230 Section II: Web Browser Interface

231 AT-S84 Management Software User s Guide Back Pressure Sets back pressure on all the ports. You cannot set back pressure on an individual port. Choose Disable or Enable and click Apply. Port Index The port number. You cannot change this parameter. Trunk The trunk group number. A number in this column indicates that the port has been added to a trunk. For information about configuring a trunk, refer to Chapter 20, Port Trunking on page 243. Type The port type. The port type is 10/100TX for 10/100Base-T twisted pair ports and 1000Base-F for the SFP fiber port. Link Status The status of the link between the port and the end node connected to the port. The possible values are: Up - A valid link exists between the port and the end node. Down - The port and the end node have not established a valid link. Admin. Status The operating status of the port. You can use this parameter to enable or disable a port. You may want to disable a port and prevent packets from being forwarded if a problem occurs with the node or cable connected to the port. After the problem has been fixed, you can enable the port to resume normal operation. You can also disable an unused port to secure it from unauthorized connections. The possible values are: Enabled - The port is able to send and receive Ethernet frames. This is the default setting for a port. Disabled - The port is disabled. Mode The speed and duplex mode settings for the port. You can use this parameter to set the speed and duplex mode of a port. Possible settings are: Auto - The port is using Auto-Negotiation to set the operating speed and duplex mode. This is the default setting for all ports. The actual operating speed and duplex mode of the port are displayed in parentheses (for example, 100F ) after a port establishes a link with an end node. 100M/Full Mbps in full-duplex mode 10M/Full - 10 Mbps in full-duplex mode Section II: Web Browser Interface 231

232 Chapter 18: Port Configuration 100M/Half Mbps in half-duplex mode 10M/Half - 10 Mbps in half-duplex mode 1000 Mbps, full-duplex When you choose a setting, note the following: When a twisted pair port is set to Auto-Negotiation, the default setting, the end node should also be using Auto-Negotiation to prevent a duplex mode mismatch. A switch port using Auto- Negotiation defaults to half-duplex if it detects that the end node is not using Auto-Negotiation. This can result in a mismatch if the end node is operating at a fixed duplex mode of full-duplex. To avoid this problem when connecting an end node with a fixed duplex mode of full-duplex to a switch port, disable Auto-Negotiation on the port and set the port s speed and duplex mode manually. The only valid setting for an optional SFP port is Auto-Negotiation. Flow Ctrl The current flow control setting on the port. The switch uses a special pause packet to notify the end node to stop transmitting for a specified period of time. The possible values are: Enabled - The port is allowed to use flow control. This is the default setting for all ports on the switch. Disabled - The port does not use flow control. 3. Click Apply to save the configuration. 232 Section II: Web Browser Interface

233 AT-S84 Management Software User s Guide Viewing and Configuring a Single Port The procedure in this section allows you to view or configure the parameter settings of one port on the switch. To view and configure the parameter settings for more than one port at a time, refer to Viewing and Configuring Multiple Ports on page 230. To view or configure the parameter settings of a single port, perform the following procedure: 1. On the home page, in the front panel image, click the port that you want to configure. A sample Configuration of Port page is shown in Figure 68. Figure 68. Configuration of Port Page 2. Adjust the following port settings as needed. Not all parameters are adjustable. Port Type The port type. The port type is 1000TX for 10/100/1000Base-T twisted pair ports and 1000BaseF for an optional SFP fiber optic port. Trunk ID The trunk group number. A number in this column indicates that the Section II: Web Browser Interface 233

234 Chapter 18: Port Configuration port is a member of a port trunk. For information about configuring a trunk, refer to Chapter 20, Port Trunking on page 243. Operation Status The status of the link between the port and the end node connected to the port. You must use the Port Configuration page to configure this parameter. For information, refer to Viewing and Configuring Multiple Ports on page 230. Admin. Status The operating status of the port. You can use this parameter to enable or disable a port. You may want to disable a port and prevent packets from being forwarded if a problem occurs with the node or cable connected to the port. After the problem has been fixed, you can enable the port to resume normal operation. You can also disable an unused port to secure it from unauthorized connections. The possible values are: Enabled - The port is able to send and receive Ethernet frames. This is the default setting for a port. Disabled - The port is disabled. Mode The speed and duplex mode settings for the port. You can use this parameter to set the speed and duplex mode of a port. The possible settings are: Auto - The port is using Auto-Negotiation to set the operating speed and duplex mode. This is the default setting for all ports. The actual operating speed and duplex mode of the port are displayed in parentheses (for example, 1000F for 1000 Mbps full duplex mode) after a port establishes a link with an end node. 100M/Full Mbps in full-duplex mode 10M/Full - 10 Mbps in full-duplex mode 100M/Half Mbps in half-duplex mode 10M/Half - 10 Mbps in half-duplex mode When you select a setting, note the following: When a twisted pair port is set to Auto-Negotiation, the default setting, the end node should also be using Auto-Negotiation to prevent a duplex mode mismatch. A switch port using Auto- Negotiation defaults to half-duplex if it detects that the end node is not using Auto-Negotiation. This can result in a mismatch if the end node is operating at a fixed duplex mode of full-duplex. To avoid this problem when connecting an end node with a fixed duplex mode of full-duplex to a switch port, disable Auto-Negotiation on 234 Section II: Web Browser Interface

235 AT-S84 Management Software User s Guide the port and set the port s speed and duplex mode manually. Allied Telesyn does not recommend manually setting a 10/100/ 1000Base-T twisted pair port to either 1000 Mbps full duplex or 1000 Mbps half duplex. For 1000 Mbps operation, Allied Telesyn recommends setting the port to Auto-Negotiation. The only valid setting for an optional SFP port is Auto-Negotiation. Flow Ctrl The current flow control setting on the port. The switch uses a special pause packet to notify the end node to stop transmitting for a specified period of time. The possible values are: Enabled - The port uses flow control. This is the default setting for all ports on the switch. Disabled - The port does not use flow control. MAC Address The port s MAC address. You cannot change this setting. Note You cannot configure back pressure on an individual port basis. To configure back pressure on all ports, refer to Viewing and Configuring Multiple Ports on page Click Apply. 4. To view or configure the parameter settings on another port, click Go to Port and select the port from the list, 5. Repeat step 2 in this procedure to configure the settings 6. Click Apply. To return to the front panel page, click Return To Front Panel. Section II: Web Browser Interface 235

236 Chapter 18: Port Configuration Displaying Port Statistics To display port statistics, perform the following procedure: 1. From the Main Menu, select Statistics. The Statistics page opens as shown in Figure 69. Figure 69. Statistics Page 2. To view statistics for a port, select a port from the Select Port list and click Apply. The statistics are displayed in a table that contains the following items of information: 236 Section II: Web Browser Interface

237 AT-S84 Management Software User s Guide Total RX Bytes Number of bytes received on the port. Total RX Pkts Number of packets received on the port. Good Broadcast Number of valid broadcast packets received on the port. Good Multicast Number of valid multicast packets received on the port. CRC/Align Errors Number of packets with a cyclic redundancy check (CRC) error but with the proper length ( bytes) received on the port. Undersize Pkts Number of packets that were less than the minimum length specified by IEEE (64 bytes including the CRC) received on the port. Oversize Pkts Number of packets that exceeded the maximum length specified by IEEE (1518 bytes including the CRC) received on the port. Fragments Number of undersized packets, packets with alignment errors, and packets with FCS errors (CRC errors) received on the port. Jabbers Number of electrical signal errors detected on the port. Collisions Number of packet collisions on the port. 64-Byte Pkts Number of 64-byte packets sent or received by the port. The minimum length of an Ethernet packet is 64 bytes Pkts Number of 65- to 127-byte packets sent or received by the port Pkts Number of 128- to 255-byte packets sent or received by the port Pkts Number of 256- to 511-byte packets sent or received by the port Pkts Number of 512- to 1023-byte packets sent or received by the port Pkts Number of to 1522-byte packets sent or received by the port. The maximum length of an Ethernet packet is 1518 bytes. Section II: Web Browser Interface 237

238 Chapter 18: Port Configuration 3. To modify how frequently the statistics are updated, from the Request Time list, select the desired time and click Refresh Now. The default is every two seconds. (You can click Refresh Now at any time to update the page.) 238 Section II: Web Browser Interface

239 Chapter 19 SNMP This chapter contains the following procedures for working with the Simple Network Management Protocol (SNMP): Enabling or Disabling the SNMP Agent on page 240 Changing the Default SNMP Community Names on page 241 Working with Trap Receivers on page 242 Note For background information on SNMP, refer to SNMP Overview on page 60. Section II: Web Browser Interface 239

240 Chapter 19: SNMP Enabling or Disabling the SNMP Agent To enable or disable the SNMP agent, perform the following procedure: 1. From the Basic Config menu, select User Interface. 2. From the User Interface menu, select User Interface. The User Interface page is shown in Figure 60 on page For the SNMP Agent parameter, choose Enable or Disable from the list. The default is Enable. When you enable this parameter, SNMP access is allowed. 4. Click Apply. 240 Section II: Web Browser Interface

241 AT-S84 Management Software User s Guide Changing the Default SNMP Community Names To configure the SNMP settings, perform the following procedure: 1. From the Basic Config menu, select SNMP Config. The SNMP Configuration page is shown in Figure 70. Figure 70. SNMP Configuration Page 2. Click the SNMP Read Community field and type the name of the read community. The default is public. 3. Click the SNMP Write Community field and type the name of the write community. The default is private. 4. To set Trap Authentication for that community string, select Enable or Disable from the list. 5. Click Apply. Section II: Web Browser Interface 241

242 Chapter 19: SNMP Working with Trap Receivers This section contains the following procedures: Adding and Enabling a Trap Receiver, next Disabling a Trap Receiver on page 242 Deleting a Trap Receiver on page 242 Adding and Enabling a Trap Receiver To add and enable a trap receiver, perform the following procedure: 1. From the Basic Config menu, select SNMP Config. The SNMP Configuration page is shown in Figure 70 on page In the bottom half of the page, enter the IP address for each trap receiver. 3. Enter the community string to associate with that trap receiver. 4. Select Enable from the list. 5. Click Apply. Disabling a Trap Receiver To disable a trap receiver, perform the following procedure: 1. From the Basic Config menu, select SNMP Config. The SNMP Configuration page is shown in Figure 70 on page To the right of the trap receiver you want to disable, select Disable from the list. 3. Click Apply. Deleting a Trap Receiver To delete a trap receiver, perform the following procedure: 1. From the Basic Config menu, select SNMP Config. The SNMP Configuration page is shown in Figure 70 on page To the right of the trap receiver you want to disable, select Delete from the list. 3. Click Apply. NOT CLEAR WHAT THE RESTORE BUTTON DOES!!! 242 Section II: Web Browser Interface

243 Chapter 20 Port Trunking This chapter contains the following procedures for working with port trunking: Setting Up a Port Trunk on page 244 Setting Up an LACP Trunk on page 246 Note For background information on trunking, refer to Port Trunking Overview on page 82. Section II: Web Browser Interface 243

244 Chapter 20: Port Trunking Setting Up a Port Trunk This section contains the following procedures for working with port trunks: Creating a Port Trunk, next Enabling or Disabling a Port Trunk on page 245 Creating a Port Trunk This procedure explains how to create a port trunk. Note Do not connect the cables of a port trunk to the ports on the switch until after you have configured the ports on both the switch and the end node. Connecting the cables prior to configuring the ports can create loops in your network topology. Loops can result in broadcast storms, which can adversely affect the operation of your network. To create a port trunk, perform the following procedure: 1. From the Advanced Config menu, select Trunk Config. The Trunk Configuration page is shown in Figure 71. Figure 71. Trunk Configuration Page 244 Section II: Web Browser Interface

245 AT-S84 Management Software User s Guide If the switch does not contain a port trunk, all of the ports on the switch are unchecked. If there is a port trunk, the ports in the trunk are checked. 2. In any one of the unused Trunk ID rows, click the check box next to the ports that will make up the port trunk. A check in a box indicates the port is a member of the trunk. No check means the port is not a member. A port trunk can contain up to eight ports. 3. From the list at the end of the port list for the trunk you want to enable or disable, choose Manual to enable the trunk, or Disable to disable it. 4. Click Apply. The trunk is now operational on the switch. 5. Configure the port trunk on the other switch and connect the cables. Enabling or Disabling a Port Trunk This procedure enables and disables a port trunk. Note the following before performing this procedure: Do not enable a port trunk until after you have configured the trunk on both switches. Do not connect the cables to the ports on the switches until after you have configured and enabled the trunk on both switches. Note If you are disabling a port trunk, be sure to first disconnect all cables from the ports of the trunk. Leaving the cables connected can create loops in your network topology because the ports of a disabled port trunk function as normal network ports, forwarding individual network traffic. To enable or disable a port trunk, perform the following procedure: 1. From the Advanced Config menu, select Trunk Config. The Trunk Configuration page is shown in Figure From the list at the end of the port list for the trunk you want to enable or disable, choose Manual to enable the trunk, or Disable to disable it. 3. Click Apply. Section II: Web Browser Interface 245

246 Chapter 20: Port Trunking Setting Up an LACP Trunk This section contains the following procedures for working with LACP trunks: Creating an LACP Trunk, next Configuring the LACP Port Priority on page 246 Verifying the LACP Group Settings on page 247 Disabling an LACP Trunk on page 248 Note You must create a trunk group before you can configure it as an LACP trunk. For more information about LACP trunks, refer to LACP Trunks on page 84. Creating an LACP Trunk To create an LACP trunk, perform the following procedure: 1. From the Advanced Config menu, select Trunk Config. The Trunk Configuration page is shown in Figure 71 on page From the list at the end of the port list for the trunk you want to make into an LACP trunk, choose Active. 3. Click Apply. Configuring the LACP Port Priority To configure the LACP port priority, perform the following procedure: 1. From the Advanced Config menu, select Trunk Config and then Port Priority Config. 246 Section II: Web Browser Interface

247 AT-S84 Management Software User s Guide The LACP Port Priority page is shown in Figure 72. Figure 72. LACP Port Priority Page 2. In the priority column, enter a priority number for the port(s). 3. Click Apply. Verifying the LACP Group Settings To verify the LACP group settings, perform the following procedure: 1. From the Advanced Config menu, select Trunk Config and then LACP Group Status. Section II: Web Browser Interface 247

248 Chapter 20: Port Trunking The LACP Group Status page is shown in Figure 73. Figure 73. LACP Group Status Page The LACP Group Status page displays the following information about the LACP group: System Priority The system priority as defined by IEE 802.3ad. You cannot change this. System ID The MAC address of the system. Key The key for this trunk group. The page also contains a table that displays the following information: Aggregator The port that is operating as the aggregator. Attached Port List The ports assigned to the aggregator. Disabling an LACP Trunk To create an LACP trunk, perform the following procedure: 1. From the Advanced Config menu, select Trunk Config. 248 Section II: Web Browser Interface

249 AT-S84 Management Software User s Guide The Trunk Configuration page is shown in Figure 71 on page From the list at the end of the port list for the trunk you want to disable, choose Passive. 3. Click Apply. Section II: Web Browser Interface 249

250 Chapter 20: Port Trunking 250 Section II: Web Browser Interface

251 Chapter 21 Port Mirroring This chapter contains the procedure for setting up port mirroring. Port mirroring allows you to unobtrusively monitor the ingress and egress traffic on a port by having the traffic copied to another port. This chapter contains the following sections: Configuring Port Mirroring on page 252 Disabling Port Mirroring on page 253 Note For background information on port mirroring, refer to Port Mirroring Overview on page 98. Section II: Web Browser Interface 251

252 Chapter 21: Port Mirroring Configuring Port Mirroring To set up port mirroring, perform the following procedure: 1. From the Advanced Config menu, select Port Mirroring. The Port Mirroring page is shown in Figure 74. Figure 74. Port Mirroring Page 2. In the Mirroring Port section, select the port where the network analyzer is connected. 3. In the Port Being Mirrored section, select the port whose ingress and egress traffic you want to monitor. You can select only one port. 4. Click Apply. 5. From the Mirroring Status list, select Enable and click Apply. Port mirroring is immediately enabled on the switch. You can now connect a data analyzer to the mirroring port to monitor the traffic on the other port. 252 Section II: Web Browser Interface

253 AT-S84 Management Software User s Guide Disabling Port Mirroring To disable port mirroring, perform the following procedure: 1. From the Advanced Config menu, select Port Mirroring. The Port Mirroring page is shown in Figure 74 on page From the Mirroring Status list, select Disable and click Apply. Port mirroring is immediately disabled on the switch. You can now use the mirroring port for regular network operations. Section II: Web Browser Interface 253

254 Chapter 21: Port Mirroring 254 Section II: Web Browser Interface

255 Chapter 22 Virtual LANs This chapter contains the procedures for creating, modifying, and deleting and tagged Virtual Local Area Networks (VLANs) from a web browser management session. This chapter contains the following sections: Creating a VLAN on page 256 Configuring the PVID of Untagged Ports on page 258 Displaying the VLANs on page 261 Modifying a VLAN on page 262 Deleting a VLAN on page 264 Deleting All VLANs on page 265 Enabling or Disabling GVRP on page 266 Note For background information, refer to VLAN Overview on page 106. Section II: Web Browser Interface 255

256 Chapter 22: Virtual LANs Creating a VLAN This section contains the procedure for creating a new or tagged VLAN. This procedure assigns the VLAN a name, a VID number, and the untagged and tagged member ports. After performing this procedure, the PVID values of the untagged ports of the VLAN must be adjusted to match the virtual LAN s VID number. In order for a port to be considered an untagged member of a VLAN, its PVID value must be changed to match the VID of the virtual LAN. This procedure is found in Configuring the PVID of Untagged Ports on page 258. To configure a VLAN, perform the following procedure: 1. From the Advanced Config menu, select VLAN Config and then Create VLAN. The Create VLAN page is shown in Figure 75. Figure 75. Create VLAN Page 2. In the VLAN ID field, enter a VLAN ID for the new VLAN. The range is 2 to If this VLAN will be unique in your network, then its VLAN ID (VID) must also be unique from all other VIDs in the network. 3. In the VLAN Name field, enter a name for the VLAN. 256 Section II: Web Browser Interface

257 AT-S84 Management Software User s Guide The name can contain up to 32 characters including spaces but not including special characters such as asterisks (*) or exclamation points (!). If the VLAN will be unique in you network, then the name should be unique as well. If the VLAN will be part of a larger VLAN that spans multiple switches, then the name for the VLAN should be the same on each switch where nodes of the VLAN are connected. 4. In the Static Tagged row, click the buttons of those ports on the switch that are to be tagged or untagged members of the new VLAN. While you might assume that the Static Tagged row is only used to specify tagged ports of the VLAN, you should use it to specify the untagged ports of a new VLAN as well. 5. Click Apply to create the new VLAN. The switch creates the VLAN. However, the page does not change. It continues to display the VLAN just created. 6. To create another new VLAN, click Clear or repeat this procedure. 7. If the new VLAN contains untagged ports, perform the next procedure, Configuring the PVID of Untagged Ports on page 258, to change the PVID of the untagged ports to match the virtual LAN s VID. Section II: Web Browser Interface 257

258 Chapter 22: Virtual LANs Configuring the PVID of Untagged Ports This procedure adjusts a port s VID value. The PVID value determines the VLAN in which the port is an untagged member. A port is an untagged member of the VLAN whose VID value matches its PVID. A port can be an untagged member of only one VLAN at a time. The ports of a new VLAN are initially designated as tagged ports. Their PVID values retain their previous settings when they are assigned to a new VLAN. If you want the ports to function as untagged members of a new VLAN, you must change their PVID values to match the VID of the VLAN, as explained in this procedure. You can also use this procedure to change the VLAN assignment of an untagged port. With this procedure you can move an untagged port from one VLAN to another by changing its PVID value. To adjust the PVID value of a port, perform the following procedure: 1. From the Advanced Config menu, select VLAN Config and then VLAN Port Config. 258 Section II: Web Browser Interface

259 AT-S84 Management Software User s Guide The VLAN Port Configuration page is shown in Figure 76. Figure 76. PVID Page 2. Click the PVID field of the port whose value you want to change and enter the new PVID value for the port. The PVID must be equal to the VID of the VLAN where you want the port to be an untagged member. For example, to make Port 10 an untagged member of a VLAN that has a VID of 12, you would change its PVID to 12. Note If you specify a PVID that does not correspond to any VIDs on the switch, the management software creates a new VLAN with a VID that equals the PVID. The VLAN is not assigned any name. 3. Click Apply. Section II: Web Browser Interface 259

260 Chapter 22: Virtual LANs 4. Repeat steps 2 and 3 to change the PVID values of other ports. 260 Section II: Web Browser Interface

261 AT-S84 Management Software User s Guide Displaying the VLANs To display the VLANs, perform the following procedure: 1. From the Advanced Config menu, select VLAN Config and then VLAN Port Config. The VLAN Information page is shown in Figure 78 on page 262 and provides the following columns of information: VLAN ID The VLAN ID number. Name The VLAN s name. VLAN Type The VLAN type as either permanent or static. The Default VLAN is permanent and all other VLANs are static. 2. To view the ports of a VLAN, click the VID of the VLAN. An example of the VLAN Configuration - Members page is shown in Figure 77. Figure 77. VLAN Configuration - Members Page Untagged ports of the VLAN are indicated with a U and tagged ports with a T. Section II: Web Browser Interface 261

262 Chapter 22: Virtual LANs Modifying a VLAN This procedure allows you to perform the following functions: Change the name of a VLAN. Add or remove tagged ports from a VLAN. Before performing this procedure, note the following: You cannot change the VID of an existing VLAN. You cannot add an untagged port to a VLAN using this procedure. That function requires changing a port s VID value, as explained in Configuring the PVID of Untagged Ports on page 258 You cannot remove an untagged port from a VLAN using this procedure. To remove an untagged port from a VLAN, you must assign it as an untagged member of another VLAN by changing its PVID, as explained in Configuring the PVID of Untagged Ports on page 258. To change the name of a VLAN or to add or remove tagged ports, perform the following procedure: 1. From the Advanced Config menu, select VLAN Config and then VLAN Info. The VLAN Information page is shown in Figure 78. Figure 78. VLAN Information Page Use the Next Page and Previous Page buttons to scroll through the list of VLANs. 262 Section II: Web Browser Interface

263 AT-S84 Management Software User s Guide 2. In the VLAN Action column, click Modify next to the VLAN you want to modify. The Modify VLAN page is shown in Figure 79. Figure 79. Modify VLAN Page 3. To change the VLAN s name, click the VLAN Name field and enter the new name. The name can contain up to 32 characters including spaces but not including special characters such as asterisks (*) or exclamation points (!). 4. To add a new tagged port to the VLAN, click the button in the Static Tagged row of the port to be added as a tagged port. 5. To remove a tagged port from the VLAN, click the button in the Not Member row of the port to be removed. If you make changes to the VLAN that you want to cancel, click Restore. If you want to clear the current name and all tagged port assignments from the VLAN prior to assigning it a new name and new tagged ports, click Clear. 6. After you have made the desired changes, click Apply. The changes are implemented on the VLAN. The current VLAN window remains on the screen. You can make additional changes to the VLAN or you can repeat this procedure to modify other VLANs. Section II: Web Browser Interface 263

264 Chapter 22: Virtual LANs Deleting a VLAN To delete a VLAN, perform the following procedure: 1. From the Advanced Config menu, select VLAN Info. The VLAN Information page is shown in Figure 78 on page In the VLAN Action column, click Delete next to the VLAN you want to delete. A confirmation prompt is displayed. 3. Click OK to delete the VLAN or Cancel to cancel the deletion. Note You cannot delete the Default VLAN which has a VID of 1. The VLAN Information window is updated to show that the VLAN is deleted. The untagged ports of a deleted VLAN are automatically returned to the Default VLAN. 264 Section II: Web Browser Interface

265 AT-S84 Management Software User s Guide Deleting All VLANs The following procedure for deletes all VLANs, except the Default_VLAN, on a switch. To delete selected VLANs, refer to Deleting a VLAN on page 264. To reset to the default VLAN, perform the following procedure: 1. From the Advanced Config menu, select VLAN Info. The VLAN Information page is shown in Figure 78 on page Click Reset to Default. The following prompt is displayed: Reset VLAN configuration to default? 3. Click OK to continue or click Cancel to stop the changes. The VLAN Information page is redisplayed with ALL VLANs, except the default, deleted. Section II: Web Browser Interface 265

266 Chapter 22: Virtual LANs Enabling or Disabling GVRP To enable or disable GVRP, perform the following procedure: 1. From the Advanced Config menu, select VLAN Config and then VLAN Info. The VLAN Information page is shown in Figure 78 on page From the GVRP status list, choose either Enable or Disable. 3. Click Apply. 266 Section II: Web Browser Interface

267 Chapter 23 Quality of Service (QoS) This chapter contains the procedure for configuring Quality of Service (QoS). This chapter includes the following procedures: Mapping CoS Priorities to Egress Queues on page 268 Configuring CoS on page 270 Note For background information on QoS, refer to QoS Overview on page 126 Section II: Web Browser Interface 267

268 Chapter 23: Quality of Service (QoS) Mapping CoS Priorities to Egress Queues This procedure explains how to change the default mappings of CoS priorities to egress priority queues, as shown in Table 2 on page 127. This is set at the switch level. You cannot set this at the per-port level. This procedure also enables and disables QoS. To change the default mappings of CoS priorities to egress priority queues or to enable or disable QoS, perform the following procedure: 1. From the Advanced Config menu, select QoS Config and then select Traffic Class. The Traffic Class Configuration page is shown in Figure 80. Figure 80. Traffic Class Configuration Page 2. To enable or disable QoS, select Enable or Disable from the QoS Status list. The default is disabled. 268 Section II: Web Browser Interface

269 AT-S84 Management Software User s Guide 3. To change the egress priority queue assignment of an 802.1p priority class, click the dialog circle of the queue for the corresponding priority. For example, to direct all tagged traffic with a priority of 4 to egress queue 3 on the ports, you would click the button for queue 3 in the priority 4 row. 4. Click Apply. Note The switch does not alter the original priority level in tagged frames. Frames leave the switch with the same priority level they had when they entered the switch. Section II: Web Browser Interface 269

270 Chapter 23: Quality of Service (QoS) Configuring CoS As explained in QoS Overview on page 126, a packet received on a port is placed it into one of four priority queues on the egress port according to the switch s mapping of 802.1p priority levels to egress priority queues. The default mappings are shown in Table 2 on page 127. You can override the mappings at the port level by assigning a new default egress queue to a port. Note that this assignment is made on the ingress port and before the frame is forwarded to the egress port. Consequently, you need to configure this feature on the ingress port. For example, you can configure a switch port so that all ingress frames are stored in egress queue 3 of the egress port, regardless of the priority levels that might be in the frames themselves, as found in tagged frames. Note The switch does not alter the original priority level in tagged frames. Frames leave the switch with the same priority level they had when they entered the switch. To configure CoS for a port, perform the following procedure: 1. From the Advanced Config menu, select QoS Config and then select Port Priority Config. 270 Section II: Web Browser Interface

271 AT-S84 Management Software User s Guide The Port Priority Configuration page is shown in Figure 81. Figure 81. Port Priority Configuration Page The columns in the menu display the following information: Port Displays the port number. Trunk Displays the trunk number if the port is a member of a trunk. Traffic Class Enter the traffic class s current egress priority. Queue Displays the number of the queue where untagged packets received on the port are stored on the egress queue. Override Displays whether the priority level in ingress tagged frames is being used or not. If No, the override is deactivated and the port is using the priority levels contained within the frames to determine the egress Section II: Web Browser Interface 271

272 Chapter 23: Quality of Service (QoS) queue. If Yes, the override is activated and the tagged packets are stored in the egress queue specified in the Queue column. 2. To change the egress queue where ingress untagged frames received on a port are to be stored on the egress port, refer to Table 2 on page 127. The range is 0 (lowest) to 3 (highest). The default is 0. For example, if you select 3 for queue 3 for a port, all ingress untagged packets received on the port are stored in egress queue 3 on the egress port. (If you perform Step 3 and override the priority level in ingress tagged packets, this also applies to tagged packets as well.) If the selected port is part of a port trunk, all ports in the trunk are automatically assigned the same egress queue. 3. To configure a tagged port so that the switch ignores the priority tag in ingress tagged frames, select Enable from the Override column for the corresponding port. The default for this parameter is disabled, meaning that the priority level of tagged frames is determined by the priority level specified in the frame itself. 4. Click Apply. Note The tagged information in a frame is not changed as the frame traverses the switch. A tagged frame leaves a switch with the same priority level that it had when it entered. 272 Section II: Web Browser Interface

273 Chapter 24 IGMP This chapter contains the following procedures for working with the Internet Group Management Protocol (IGMP): Configuring IGMP on page 274 Note For background information on IGMP, refer to IGMP Snooping Overview on page 138. Section II: Web Browser Interface 273

274 Chapter 24: IGMP Configuring IGMP To configure the IGMP settings, perform the following procedure: 1. From the Advanced Config menu, select IGMP Snooping. The IGMP Snooping page is shown in Figure 82. Figure 82. IGMP Snooping Page 2. To enable or disable IGMP, select Enable or Disable from the IGMP Snooping Status list. 3. To set the age-out timer, type a number in the IGMP Snooping Age- Out Timer field. The range is 280 to 420 seconds and the default is 280 seconds. 274 Section II: Web Browser Interface

275 AT-S84 Management Software User s Guide Viewing the Multicast Group Members To view the multicast group members, perform the following procedure: 1. From the Advanced Config menu, select IGMP Snooping. The IGMP Snooping page is shown in Figure 82 on page Click on the MAC address of the multicast group you want to view. The IGMP Snooping - Group Members page is shown in Figure 83. Figure 83. IGMP Snooping - Group Members Page Section II: Web Browser Interface 275

276 Chapter 24: IGMP 276 Section II: Web Browser Interface

277 Chapter 25 RSTP This chapter contains the following procedures for working with the Remote Spanning Tree Protocol (RSTP): Basic RSTP Configuration on page 278 Configuring RSTP Port Settings on page 281 Viewing the RSTP Topology on page 286 Note For background information on RSTP, refer to RSTP Overview on page 146. Section II: Web Browser Interface 277

278 Chapter 25: RSTP Basic RSTP Configuration To configure the RSTP settings, perform the following procedure: 1. From the Basic Config menu, select Rapid Spanning Tree and then RSTP Config. The Rapid Spanning Tree Configuration page is shown in Figure 84. Figure 84. Rapid Spanning Tree Configuration Page The RSTP Configuration page allows you to configure RSTP as well as to view the current settings and contains the following items of information in the middle portion: Root Port The active port on the switch that is communicating with the root 278 Section II: Web Browser Interface

279 AT-S84 Management Software User s Guide bridge. If the switch is the root bridge for the LAN, then there is no root port and the root port parameter will be 0. Root Path Cost The sum of all the root port costs of all the bridges between the switch s root port and the root bridge including the switch s root port cost. Time Since Topology Change The time in seconds since the last topology change took place. When RSTP detects a change to the LAN s topology or when the switch is rebooted, this parameter is reset to 0 seconds and begins incrementing until the next topology change is detected. Topology Change Count An integer that reflects the number of times RSTP has detected a topology change on the LAN since the switch was initially powered on or rebooted. The following parameters refer to the designated root bridge: Designated Root This parameter includes two fields: the root bridge priority and the MAC address of the root bridge. For example, C08F1211BB shows the root bridge priority as 1000, and 00C08F1211BB as the MAC address. Hello Time The hello time. See Hello Time and Bridge Protocol Data Units (BPDUs) on page 149. This parameter affects only the root bridge. Maximum Age The maximum amount of time that BPDUs are stored before being deleted on the root bridge. Forward Delay The time interval between generating and sending configuration messages by the root bridge. The lower section provides information about the bridge: The following parameters refer to the switch. Bridge ID The MAC address of the bridge. The bridge identifier is use as a tie breaker in the selection of the root bridge when two or more bridges have the same bridge priority. You cannot change this setting. Bridge Hello Time This is the time interval between generating and sending configuration messages by the bridge. This parameter is active only when the switch is the root bridge. Section II: Web Browser Interface 279

280 Chapter 25: RSTP Bridge Maximum Age The length of time after which stored bridge protocol data units (BPDUs) are deleted by the bridge. Bridge Forward Delay This is the time interval between generating and sending configuration messages by the bridge. 280 Section II: Web Browser Interface

281 AT-S84 Management Software User s Guide Configuring RSTP Port Settings This section contains the following topics: Configuring the Basic RSTP Port Settings, next Configuring the Advanced RSTP Port Settings on page 283 Configuring the Basic RSTP Port Settings To configure the basic RSTP port settings, perform the following procedure: 1. From the Basic Config menu, select Rapid Spanning Tree and then RSTP Basic Port Config. Section II: Web Browser Interface 281

282 Chapter 25: RSTP The RSTP Basic Port Configuration page is shown in Figure 85. Figure 85. RSTP Basic Port Configuration Page 2. In the STP Status column for the port you want to configure, select the STP status from the list, either Enable or Disable. 3. In the Priority column for the port you want to configure, type a number for the port priority. Port priority is described in Port Priority on page Section II: Web Browser Interface

283 AT-S84 Management Software User s Guide 4. In the Path Cost column for the port you want to configure, type a number for the Path Cost. Path cost is described in Path Costs and Port Costs on page Click Apply. 6. To configure all of the ports to the same settings, in the All row, configure one, two, or all of the following settings: STP Status, Priority, and Path Cost. Click Apply. Configuring the Advanced RSTP Port Settings To configure the advanced RSTP port settings, perform the following procedure: 1. From the Basic Config menu, select Rapid Spanning Tree and then RSTP Adv. Port Config. Section II: Web Browser Interface 283

284 Chapter 25: RSTP The RSTP Advanced Port Configuration page is shown in Figure 86. Figure 86. RSTP Advanced Port Configuration Page 2. In the Admin/OperEdge column for the port you want to configure, choose True or False to set whether or not the port will operate as an edge port. 284 Section II: Web Browser Interface

285 AT-S84 Management Software User s Guide 3. In the Admin/OperPtoP column for the port you want to configure, choose a setting based on the information in Table In the Migration column for the port you want to configure, click Restart to reset the port. 5. Click Apply. To configure all of the ports to the same settings, in the All row, configure one, two, or all of the following settings: Admin/OperEdge, Admin/OperPtoP, and Migration. 6. Click Apply. Table 7. RSTP Point-to-Point Status Admin Operation Port Duplex Operation Auto True Full False Half True True Full or Half False False Full or Half Section II: Web Browser Interface 285

286 Chapter 25: RSTP Viewing the RSTP Topology To view the current RSTP topology, perform the following procedure: 1. From the Basic Config menu, select Rapid Spanning Tree and then RSTP Topology. The Designated Topology Information page is shown in Figure 87. Figure 87. Designated Topology Information Page This page displays the following information about the ports: Trunk The trunk of which the port is a member. Link Status Whether the link on the port is up or down. Designated Root The designated root bridge to which the switch s root port is actively connected. 286 Section II: Web Browser Interface

287 AT-S84 Management Software User s Guide Designated Cost The sum of all the root port costs on all bridges, including the switch, between the switch and the root bridge. Designated Bridge An adjacent bridge to which the root port of the switch is actively connected. Designated Port The root bridge to which the root port of the switch is actively connected. Section II: Web Browser Interface 287

288 Chapter 25: RSTP 288 Section II: Web Browser Interface

289 Chapter x Network Access Control This chapter contains the procedure for configuring 802.1x network access control: Configuring 802.1x Network Access Control on page 290 Note For background information, refer to 802.1x Network Access Control Overview on page 168. Section II: Web Browser Interface 289

290 Chapter 26: 802.1x Network Access Control Configuring 802.1x Network Access Control To configure 802.1x network access control, perform the following procedure: 1. From the Advanced Config menu, select 802.1x. The 802.1x Configuration page is shown in Figure 88. Figure x Configuration Page Note The Initialize and Re-auth Initialize parameters are described in Steps 5 and 6, respectively. 2. To select a port, do the following: 290 Section II: Web Browser Interface

291 AT-S84 Management Software User s Guide a. Click Go To Port and select the port you want to configure from the list. You can configure only one port at a time. b. Click Apply. The current settings for the selected port are displayed. 3. Configure the following parameters as needed: NAS ID This parameter assigns an 802.1x identifier to the switch that applies to all ports. The NAS ID can be up to sixteen characters. Valid characters are 0 to 9, a to z, and A to Z. Spaces are allowed. Specifying an NAS ID is optional. Port Status Displays the current status of the port as either authorized or unauthorized. You cannot adjust this parameter. Port Control Sets the 802.1x port control setting. The possible settings are: Auto - Enables 802.1x authentication and causes the port to begin in the unauthorized state, allowing only EAPOL frames to be sent and received through the port. The authentication process begins when the link state of the port changes or the port receives an EAPOL-Start packet from a supplicant. The switch requests the identity of the client and begins relaying authentication prompts between the client and the authentication server. Force-Unauthorized - Places the port in the unauthorized state, ignoring all attempts by the client to authenticate. The switch cannot provide authentication services to the client through the interface. Force-Authorized - Disables IEEE 802.1x authentication and causes the port to transition to the authorized state without any authentication exchange required. The port transmits and receives normal traffic without 802.1x-based authentication of the client. This is the default setting Quiet Period Sets the number of seconds that the port remains in the quiet state following a failed authentication exchange with the client. The default value is 60 seconds. The range is 0 to 65,535 seconds. Transmission Period Sets the number of seconds that the switch waits for a response to an EAP-request/identity frame from the client before retransmitting the request. The default value is 30 seconds. The range is 1 to 65,535 seconds. Supplicant Timeout Sets the switch-to-client retransmission time for the EAP-request Section II: Web Browser Interface 291

292 Chapter 26: 802.1x Network Access Control frame. The default value for this parameter is 30 seconds. The range is 1 to 600 seconds. Server Timeout Sets the timer used by the switch to determine authentication server timeout conditions. The default value for this parameter is 10 seconds. The range is 1 to 60 seconds. Maximum Request Sets the maximum number of times that the switch retransmits an EAP Request packet to the client before it times out the authentication session. The default value for this parameter is 2 retransmissions. The range is 1 to 10 retransmissions. Re-auth Period Specifies the time period between periodic reauthentication of the client. The default value is 3600 seconds. The range is 1 to 65,535 seconds. Re-auth Status Specifies if reauthentication should occur according to the reauthentication period. The options are Enabled or Disabled. 4. When you are finished configuring the parameters, click Apply. 5. If the port control setting is Auto and you want to return the EAPOL machine state on the port to the initialized state, select Yes for the Initialize parameter and click Apply. 6. If the port control setting is Auto and you want the node connected to the port to reauthenticate with the RADIUS server, select Yes for the Re-auth Initialize parameter and click Apply. 292 Section II: Web Browser Interface

293 Chapter 27 RADIUS Authentication Protocol This chapter explains how to configure the RADIUS client on the switch. You can use the RADIUS client with 802.1x network access control to control who can forward packets through the switch. The chapter contains the following section: Configuring the RADIUS Client on page 294 Note For background information, refer to 802.1x Network Access Control Overview on page 168 and RADIUS Overview on page 180. Section II: Web Browser Interface 293

294 Chapter 27: RADIUS Authentication Protocol Configuring the RADIUS Client To configure the RADIUS client, perform the following procedure: 1. From the Basic Config menu, select User Interface and then RADIUS Config. The RADIUS Configuration page is shown in Figure 89. Figure 89. RADIUS Configuration Page 2. Enter the RADIUS server s IP address in the Server IP Address field. 3. To specify the server s encryption key, enter the encryption key in the Shared Secret field. 4. To change the response time setting, enter a value in the Response Time field. The response time is the amount of time in seconds the switch waits for a response from the RADIUS server. The range is 1 to 120 seconds. The default is 10 seconds. 5. To change the maximum retransmissions setting, enter a new value in the Maximum Retransmissions field. This parameter specifies the number of times the switch should retransmit to the RADIUS in the event the server does not respond. The range is 1 to 254. The default is Click Apply to save your changes. 294 Section II: Web Browser Interface

295 Chapter 28 Broadcast Storm Control This chapter contains the procedure for configuring the broadcast storm control feature on the switch: Configuring Broadcast Storm Control on page 296 Note For background information on broadcast storm control, refer to Broadcast Storm Control Overview on page 186. Section II: Web Browser Interface 295

296 Chapter 28: Broadcast Storm Control Configuring Broadcast Storm Control To configure the broadcast storm control feature, perform the following procedure: 1. From the Basic Config menu, select Storm Control. The Broadcast Storm Control page is shown in Figure 90. Figure 90. Broadcast Storm Control Page 2. From the Storm Control Status list, select Enable to activate the feature or Disable to deactivate it. The default setting is disabled. 3. If you are activating the feature, from the Threshold Value list select the desired threshold. Possible values are: High (3000 broadcast packets per second) Medium (500 broadcast packets per second) Low (100 broadcast packets per second) 4. Click Apply. 296 Section II: Web Browser Interface

297 Chapter 29 Working with System Files The procedure in this chapter explains how to download a new version of the AT-S84 management software onto the switch. The procedure is: Downloading a New Management Software Image Using TFTP on page 298 Note For information on how to obtain new releases of the AT-S84 management software, refer to Management Software Updates on page 15. Uploading or Downloading a Configuration File on page 300 Section II: Web Browser Interface 297

298 Chapter 29: Working with System Files Downloading a New Management Software Image Using TFTP Before downloading a new version of the AT-S84 management software onto the switch, note the following: The current configuration of a switch is retained when a new AT-S84 software image is installed. To return a switch to its default configuration values, refer to Returning the AT-S84 Management Software to the Factory Default Values on page 57. Your network must have a node with TFTP server software. You must store the new AT-S84 image file on the server. You should start the TFTP server software before you begin the procedure. The switch where you are downloading the image file must have an IP address and subnet mask. For instructions on how to configure the IP address on a switch, refer to Configuring the IP Address, Subnet Mask, and Gateway Address on page 32 or Enabling and Disabling the DHCP Client on page 35. Caution Downloading a new version of management software onto the switch causes the device to reset. Some network traffic may be lost during the reset process. This procedure assumes that you have already obtained the software and have stored it on the computer from which you will be performing this procedure. To download the AT-S84 image software onto the switch, perform the following procedure: 1. From the Tools menu, select Image Upgrade. 298 Section II: Web Browser Interface

299 AT-S84 Management Software User s Guide The Image Upgrade page is shown in Figure 91. Figure 91. Image Upgrade Page The Image/Version Date shows the current version and date of software installed on the switch. 2. Change the following parameters as necessary: Download Server IP The IP address of the TFTP server from which you are downloading the new software. Download File Name The name of the AT-S84 file you are downloading. Retry Count The number of times you want the switch to retry in the event a problem occurs during the download process. The range is 1 to 20. The default is 5 times. 3. Click Apply. The software immediately begins to download onto the switch. This process takes a few minutes. After the software download is complete, the switch initializes the software and reboots. You will lose your web browser connection to the switch during the reboot process. Section II: Web Browser Interface 299

300 Chapter 29: Working with System Files Uploading or Downloading a Configuration File The procedure in this section allows you to download a different configuration file onto the switch from a TFTP server, or upload the file to a TFTP server. To return a switch to its default configuration values, refer to Returning the AT-S84 Management Software to the Factory Default Values on page 227. Note The configuration file contains only those settings that have been changed since the switch was last reset to the default settings. Before downloading a configuration file onto the switch, note the following: Your network must have a node with TFTP server software. You must store the new configuration file on the TFTP server. You should start the TFTP server software before you begin the download procedure. The switch where you are downloading the configuration file must have an IP address and subnet mask. For instructions on how to configure the IP address on a switch, refer to Configuring the IP Address, Subnet Mask, and Gateway Address on page 32 or Enabling and Disabling the DHCP Client on page 35. When you download a new configuration file onto the switch, the new file overrides the current file and the current file is lost unless you uploaded it to a TFTP server before you replaced it. To download or upload a configuration file, perform the following procedure: 1. From the Tools menu, select Config. File Upload/Download. 300 Section II: Web Browser Interface

301 AT-S84 Management Software User s Guide The Configuration File Upload/Download page is shown in Figure 92. Figure 92. Configuration File Upload/Download Page 2. From the Download/Upload Config File list, choose Upload to upload a file to the TFTP server, or Download to download the configuration file from the TFTP server to the switch. 3. Change the following parameters as necessary: TFTP Server IP The IP address of the TFTP server. Config File Name The name of the configuration file. There is no default name for the configuration file. Retry Count The number of times you want the switch to retry in the event a problem occurs during the upload or download process. The range is 1 to 20, and the default is 5 times. 4. Click Apply. The following message is displayed: Are you sure you want to Upload/Download the new configuration file? 5. Click OK to continue, or Cancel to stop the process. Section II: Web Browser Interface 301

302 Chapter 29: Working with System Files 302 Section II: Web Browser Interface

303 Section III Using the Command Line Interface The chapter in this section provides information for using the command line interface in the AT-S84 management software. Note The menus interface is described in Section I, Using the Menus Interface on page 23, and the web browser interface is described in Section II, Using the Web Browser Interface on page 197. Section II: Using the Web Browser Interface 303

304 304 Section II: Using the Web Browser Interface

305 Chapter 30 Getting Started with the Command Line Interface This chapter describes the command modes of the AT-S84 management software command line interface and how to access them. This chapter includes the following sections: CLI Command Modes Introduction on page 306 Starting the Command Line Interface on page 315 Command Formatting on page 316 Section I: Basic Features 305

306 Chapter 30: Getting Started with the Command Line Interface CLI Command Modes Introduction The command line interface in the AT-S84 management software is accessible from the Main Menu. The commands offer the same functionality as the menus interface. For instructions on how to access the command line interface, see Starting the Command Line Interface on page 315. This chapter describes the CLI command modes and how to access the command line interface. In addition, it provides command formatting information. In the AT-S84 management software, there is a hierarchy of commands which are called command modes. There are five command modes: User EXEC Privileged EXEC Global Configuration Interface Configuration VLAN Configuration When you enter the CLI interface, you access the User EXEC command mode automatically. This is the first command mode level and it allows you access to the basic switch commands. Each command mode contains a subset of commands that are available within that mode only. As a result, you enter commands according to which command mode you have accessed. For example, port-specific commands are available from the Interface Configuration mode. You must access the first three command modes (User EXEC, Privilege EXEC, and Global Configuration modes) in the order that they are listed. You can access both the Interface Configuration and VLAN Configuration modes from the Global Configuration mode. The AT-S81 prompt changes to indicate which mode you are accessing. To access the Privilege EXEC, Global Configuration, Interface, and VLAN Configuration modes, you must enter a specific command that permits entry to a new mode. Each time you change modes, the prompt changes to indicate the mode. See Table 8 on page 307 for information about the commands used to access the modes and their respective prompts. In addition, there are commands that allow you to move between the modes and return to the Main Menu. For example, typing the EXIT command when you are in the Interface Configuration mode returns you to the Global Configuration mode. From all the command modes, the LOGOUT command exits the command line interface and returns you to the Main Menu. If you enter a command that is not accessible in a particular command mode, the software displays a command not found message. For 306 Section I: Basic Features

307 AT-S84 Management Software User s Guide example, you can enter the SHOW SNMP command from the Privileged EXEC command mode, but you cannot enter this command from the VLAN Configuration mode. Command Formatting Conventions The following formatting conventions are used in this manual: screen text font - This font illustrates the format of a command and command examples. screen text font - Italicized screen text indicates a variable for you to enter. [ ] - Brackets indicate optional parameters. - Vertical line separates parameter options for you to choose from. See the following sections for a description of each command mode, including a list of the commands available from each mode. User EXEC Command Mode on page 308 Privileged EXEC Command Mode on page 309 Global Configuration Command Mode on page 309 Interface Configuration Command Mode on page 311 VLAN Configuration Command Mode on page 313 Table 8. Command Modes Command Mode Prompt Enter and Exit Commands User EXEC mode Privileged EXEC mode Global Configuration mode Switch> Access this command mode by typing C at the Main Menu. This is the default command mode. Enter the LOGOUT or EXIT commands to quit the command mode and return to the Main Menu. Switch# Access this mode from the User EXEC mode with the ENABLE command. Enter the DISABLE or EXIT commands to return to the User EXEC mode. Enter the LOGOUT command to quit the command mode and return to the Main Menu. Switch(config)# Enter the CONFIGURE command to enter this mode from the Privileged EXEC mode. Enter the END or EXIT commands to return to the Privileged EXEC mode. Enter the LOGOUT command to quit the command mode and return to the Main Menu. Section I: Basic Features 307

308 Chapter 30: Getting Started with the Command Line Interface Table 8. Command Modes (Continued) Command Mode Prompt Enter and Exit Commands Interface Configuration VLAN Configuration Switch(config-if)# From the Global Configuration mode, type: interface Ethernet1/port Enter the END or EXIT commands to return to the Global Configuration mode. Enter the LOGOUT command to quit the command mode and return to the Main Menu. Switch(config-vlan)# From the Global Configuration mode, type: interface vlanid Enter the END or EXIT commands to return to the Global Configuration mode. Enter the LOGOUT command to quit the command mode and return to the Main Menu. User EXEC Command Mode The User EXEC command mode is the default command mode that is available from the Main Menu. It permits access to basic commands. To access any of the other modes, you must first access the User EXEC mode. The commands in the User EXEC mode are accessible from any of the other modes with the exception of the ENABLE command which is only accessible from the User EXEC mode. The prompt changes to Switch> to indicate the User EXEC mode. See Table 9 for a list of the commands that can be accessed from the User EXEC mode and a brief description of each command. Table 9. User EXEC Command Mode Commands Command ENABLE EXIT LOGOUT MODE PING Definition Changes mode from the User EXEC mode to the Privilege EXEC mode. Exits the User EXEC mode and returns you to the Main Menu. Exits the command line interface and returns you to the Main Menu. Displays the available command modes. Pings a specified IP address to check connectivity to another system. 308 Section I: Basic Features

309 AT-S84 Management Software User s Guide Privileged EXEC Command Mode The commands in the Privileged EXEC command mode permit you to perform system level commands such as rebooting the system, copying configuration files, and clearing statistics. To access this mode, you must first access the User EXEC command mode. The prompt changes to Switch# to indicate the Privileged EXEC mode. See Table 10 for a list of commands that can be access from the Privileged EXEC command mode. Table 10. Privileged EXEC Command Mode Commands Command CLEAR CONFIGURE COPY DISABLE EXIT LOGOUT MODE PING REBOOT SHOW Description Clears the interface (port) statistics counter. Changes the mode to the Global Configuration Mode. Uploads the configuration file to an image or configuration file. Exits from the Privileged EXEC command mode to the User EXEC command mode. Exits from the Privileged EXEC command mode to the User EXEC command mode. Exits the command line interface and returns to the Main Menu. Displays the available modes. Pings a specified IP address to check connectivity to another system. Reboots the system. Displays running system information. Global Configuration Command Mode The Global Configuration command mode allows you to configure advanced system features such as broadcast storm control, SNMP, and STP. To access this mode, you must first access the User EXEC and the Privileged modes. The prompt changes to Switch(config)# to indicate the Interface Configuration mode. See Table 11 for a list of commands that can be accessed from the Global Configuration mode. Table 11. Global Configuration Command Mode Commands Command BACK- PRESSURE Description Sets the back pressure feature. Section I: Basic Features 309

310 Chapter 30: Getting Started with the Command Line Interface Table 11. Global Configuration Command Mode Commands (Continued) CONSOLE DOT1X END EXIT HOSTNAME INTERFACE IP LOGOUT MLS MODE NO Command PING PRIORITY- QUEUE RADIUS- SERVER SNMP- SERVER SPANNING- TRESS STORM- CONTROL TELNET- SERVER TRUNK USERNAME Sets the console configuration. Sets the 802.1x Port-based Network Access Control configuration. Exits from the Global Configuration Command Mode to the Privileged EXEC Command Mode. Exits from the Global Configuration command mode to the Privileged EXEC command mode. Sets the name of the system. Changes the command mode to the Interface Configuration command mode (you must also specify a port). Set the IP Address and IP related commands for the system. Exits the command line interface and returns to the Main Menu. Sets the QoS feature. Displays the available modes. Negates a command or sets its defaults. Pings a specified IP address to check connectivity to another system. Maps a CoS value to a priority value. Sets a RADIUS Server. Sets the SNMP configuration in the system. Sets the STP features. Sets the Broadcast Storm Control feature for the system. Sets the Telnet server. Description Add ports to a trunk group. Sets a system user name and password. 310 Section I: Basic Features

311 AT-S84 Management Software User s Guide Interface Configuration Command Mode The Interface Configuration command mode allows you to configure features that pertain to the ports on the system such as flow control, port mirroring, and duplex mode. To access this mode, you must first access the User EXEC, Privileged EXEC, and Global Configuration modes. From the Global Configuration mode, type: interface ethernet1/port You can specify a port or a range of ports. Separate a list of ports with commas or a dash. The prompt changes to Switch(config-if)# to indicate the Interface Configuration mode. See the Port Mirroring Example on page 312 for a procedure that describes how to set the port mirroring in the Interface Configuration mode. After you have accessed the Interface Configuration mode, the commands you enter apply to the ports specified in the Global Configuration mode. To perform port-specific commands on another group of ports, you must first exit the Interface Configuration mode and then specify the new ports in the Global Configuration mode before returning to the Interface Configuration mode. For a list of commands that can be accessed from the Interface Configuration command mode, see Table 12 on page 311. Table 12. Interface Configuration Command Mode Commands Commands DEFAULT- PRIORITY DOT1X END EXIT FLOW-CTRL GETPORT LOGOUT MODE NO OVERRIDE Sets priority for a port. Description Sets the protocol configuration. Exits from the Interface Configuration Command Mode to the Global Configuration Command Mode. Exits from the Interface Configuration Command Mode to the Global Configuration Command Mode. Sets the parameters for the flow control feature. Provided information about the ports. Exits the command line interface and returns to the Main Menu. Displays the available modes. Negates a command or sets its defaults. Enables the port override feature. Section I: Basic Features 311

312 Chapter 30: Getting Started with the Command Line Interface Table 12. Interface Configuration Command Mode Commands Commands PING PORT PVID SHUTDOWN SPANNING- TREE SPEED- DUPLEX Pings a specified IP address to check connectivity to another system. Sets port mirroring parameters. Sets the PVID. Disables a port. Description Sets the parameters for the STP feature. Sets the speed and duplex mode for a port. Port Mirroring Example To configure port 8 as the mirroring port and port 6 as the mirrored port you need to first access the Interface Configuration mode, specify the port, and then configure the port mirroring feature. Perform the following procedure. 1. From the User EXEC mode, enter: enable You now have access to the Privileged EXEC Configuration mode as indicated by the Switch(config)# prompt. 2. From the Privileged EXEC Configuration mode, enter: configure You now have access to the Global Configuration mode as indicated by the Switch(config)# prompt. 3. Access port 8 on the Interface Configuration mode: interface Ethernet1/8 You now have access to the Interface Configuration mode as indicated by the Switch(config-if)# prompt. 4. Enter the port mirroring command, making port 6 the mirrored port: Switch# port mirror Section I: Basic Features

313 AT-S84 Management Software User s Guide VLAN Configuration Command Mode The VLAN Configuration command mode allows you to configure VLAN commands. To access this mode, you must first access the User EXEC, Privileged EXEC, and Global Configuration modes. From the Global Configuration command mode, type: interface vlanid The prompt changes to Switch(config-vlan)# to indicate the VLAN Configuration mode. Then enter VLAN commands. After you have accessed the VLAN Configuration mode, the commands you enter apply to the VLAN specified in the Interface Configuration mode. To configure another VLAN, you must first exit the Interface Configuration mode and then specify the new VLAN ID in the Global Configuration mode before returning to the Interface Configuration mode. See Table 13 for list of commands that can be accessed from the VLAN Configuration command mode. Table 13. VLAN Configuration Command Mode Commands Commands END EXIT GETVLAN INTERFACE LOGOUT MEMBER MODE NAME NO PING Description Exits from the VLAN Configuration mode to the Global Configuration mode. Exits from the VLAN Configuration mode to the Global Configuration mode. Displays VLAN ID information. Changes mode to the Interface Configuration command mode. Exits the command line interface and returns to the Main Menu. Sets a static VLAN member. Displays the available command modes. Sets the VLAN name. Negates a command or sets its defaults. Pings a specified IP address to check connectivity to another system. Section I: Basic Features 313

314 Chapter 30: Getting Started with the Command Line Interface VLAN Example To create a new VLAN with a VLAN ID of 2, access the Interface Configuration mode and specify the VLAN ID. Perform the following procedure. 1. From the User EXEC mode, enter: enable You now have access to the Privileged EXEC Configuration mode as indicated by the Switch(config)# prompt. 2. From the Privileged EXEC Configuration mode, enter: configure You now have access to the Global Configuration mode as indicated by the Switch(config)# prompt. 3. Create a VLAN with a VLAN ID of 2: interface vlan2 You have created a VLAN with an ID of 2. You have access to the VLAN Configuration mode as indicated by the Switch(config-vlan)# prompt. 314 Section I: Basic Features

315 AT-S84 Management Software User s Guide Starting the Command Line Interface To start the command line interface, perform the following procedure: 1. From the Main Menu (see Figure 93), type C to choose Command Line Interface. AT-8000/8POE Local Management System Enter the character in square brackets to select option Main Menu [G]eneral Information [B]asic Switch Configuration [A]dvanced Switch Configuration Switch [T]ools [C]ommand Line Interface [S]tatistics [Q]uit Command> Figure 93. Main Menu A command line prompt is displayed in Figure 94. The default switch name is Switch> and the arrow prompt indicates the user executive mode. After you name the switch with the HOSTNAME command, the new switch name replaces Switch. For example, if you rename the switch San Jose, the prompt changes to San Jose>. Switch> Figure 94. Command Line Prompt, User Executive Mode Section I: Basic Features 315

316 Chapter 30: Getting Started with the Command Line Interface Command Formatting The AT-S81 command line interface follows same formatting conventions for all of the command modes. There are command line interface features which apply to the general use of the command line and command syntax conventions which apply when entering the commands. See the following sections. Command Line Interface Features The following features are supported in the command line interface: Command history - Use the up and down arrow keys. Context-specific help - Press the question mark key,?, to see a list of legal parameters or display all of the available commands for a particular command mode. There are two formatting options: command? - List the keywords or arguments that are required by a particular command. A space between a command and a question mark is required. abbreviated command? - Provides a list of commands that begin with a particular character string. There is no space between the command and the question mark. Keyword abbreviations - Any keyword can be recognized by typing an unambiguous prefix, for example, type sh and the software responds with show. Tab key - Pressing the Tab key fills in the rest of the keyword. For example, typing di and pressing the Tab key enters disable on the command line. Command Line Syntax Conventions The following table describes the conventions used in the command interface. Table 14. Command Line Syntax Conventions Convention Description Example <string> A string of alphanumeric characters <int> Integer 202 Switch-24 <ip> IP address <interface> Port instance Ethernet1/15 <mask> Subnet mask Section I: Basic Features

317 AT-S84 Management Software User s Guide <mac-add> MAC address 00:02:15:af:2e:02 <sec> Second 12 <min> Minute 12 <port> Port instance Ethernet1/2 (stack-1,port-2) <trunk ID> Trunk group ID 4 <vlanid> <port list> Table 14. Command Line Syntax Conventions (Continued) VLAN instance (including name and VLAN identifier) A list of ports (separate entries with a comma or dash) <traffic class> Traffic class number 5 vlan3 1,2,3,4-6,20-24 Section I: Basic Features 317

318 Chapter 30: Getting Started with the Command Line Interface 318 Section I: Basic Features

319 Appendix A AT-S84 Default Settings This appendix lists the AT-S84 factory default settings. It contains the following sections in alphabetical order: Basic Switch Default Settings on page 320 SNMP Default Settings on page 322 Port Configuration Default Settings on page 323 Quality of Service on page 324 IGMP Snooping Default Settings on page 325 RSTP Default Settings on page x Network Access Control Default Settings on page 327 RADIUS Server Default Settings on page 328 Broadcast Storm Control Default Settings on page

320 Appendix A: AT-S84 Default Settings Basic Switch Default Settings This section lists the default settings for basic switch parameters. The following topics are covered: System Reboot Default Settings, next User Interface Configuration Default Settings on page 320 Management Interface Default Settings on page 320 Ping Default Settings on page 321 System IP Configuration Default Settings on page 321 System Administration Configuration Default Settings on page 321 System Reboot Default Settings The following table lists the system reboot default settings Setting Default Reboot Status Reboot Type Stop Normal User Interface Configuration Default Settings Management Interface Default Settings The following table lists the user interface default settings. Setting Default Console UI Idle Timeout 5 minutes Telnet UI Idle Timeout 5 minutes Telnet Server Enabled SNMP Agent Disabled Web Server Enabled User Name Manager The following table lists the management interface default settings. Setting Default Manager Username manager Manager Password friend Console Idle Timeoutl 5 minutes 320 Section I: Basic Features

321 AT-S84 Management Software User s Guide Note Login names and passwords are case sensitive. Ping Default Settings The following table lists the ping default settings. Setting Default Target IP Address Number of Requests 10 Timeout Value (sec.) 3 System IP Configuration Default Settings System Administration Configuration Default Settings The following table lists the system IP configuration default settings. Setting Default IP Address Subnet Mask Gateway DHCP Mode Disabled The following table describes the system administration default settings. Administration Setting Default Description AT-9000/24 Name None Location None Contact None 321

322 Appendix A: AT-S84 Default Settings SNMP Default Settings The following table describes the SNMP default settings. Setting SNMP Status SNMP Read Community SNMP Write Community Trap Authentication Default Disabled public (Read only) private (Read Write) Enabled 322 Section I: Basic Features

323 AT-S84 Management Software User s Guide Port Configuration Default Settings The following table lists the port configuration default settings. Port Configuration Setting Status Mode Flow Ctrl Back Pressure Default Enabled Auto Enabled Disabled 323

324 Appendix A: AT-S84 Default Settings Quality of Service The following table lists the default mappings of IEEE 802.1p priority levels to egress port priority queues IEEE 802.1p Priority Level Port Priority Queue 0 or 1 Q0 (lowest) 2 or 3 Q1 4 or 5 Q2 6 or 7 Q3 (highest) 324 Section I: Basic Features

325 AT-S84 Management Software User s Guide IGMP Snooping Default Settings The following table lists the IGMP Snooping default settings. Setting Default IGMP Snooping Status Disabled IGMP Snooping Age-Out Timer 280 seconds Maximum Multicast Groups 64 Multicast Router Ports Mode Auto Detect 325

326 Appendix A: AT-S84 Default Settings RSTP Default Settings The following table describes the RSTP default settings. Setting Default Global RSTP Status Disabled Hello Time 2 Sec. Bridge Forwarding 15 Maximum Age 20 Sec. Forward Delay 15 Sec. Hello Time 2 Sec. Bridge Maximum Age 20 Sec. Bridge Forward Delay 15 Sec. 326 Section I: Basic Features

327 AT-S84 Management Software User s Guide 802.1x Network Access Control Default Settings The following table describes the access control default settings per port. Settings Default NAS ID Nas1 Port Status Authorized Port Role None Port Control Force Authorized Transmission Period 30 seconds Supplicant Timeout 30 seconds Server Timeout 30 seconds Maximum Request 2 Quiet Period 60 seconds Re-authentication Period 3600 seconds Re-authentication Status Disabled 327

328 Appendix A: AT-S84 Default Settings RADIUS Server Default Settings The following table lists the default settings for RADIUS accounting. Settings Default Server IP Address Response Time 10 seconds Maximum Retransmissions Section I: Basic Features

329 AT-S84 Management Software User s Guide Broadcast Storm Control Default Settings The following table lists the default settings for broadcast storm control. Settings Default Broadcast Storm Status Threshold Disabled Low 329

330 Appendix A: AT-S84 Default Settings 330 Section I: Basic Features

331 Index Numerics 802.1x Port-based Network Access Control authentication process 169 authenticator port, described 168 configuring 174, 289 default settings 327 described 168 guidelines 171 supplicant, described 168 A administrator name, configuring 38, 211 AT-S84 management software default settings 319 features 18 resetting to factory defaults 57, 227 upgrading 190, 298 authentication server 168 authenticator port, described 168 B back pressure described 76 bridge forwarding delay, default setting 326 bridge identifier, described 146 bridge priority, described 146 bridge protocol data unit (BPDU) 157 broadcast storm control configuring 187, 295 overview 186 C Class of Service (CoS) configuring 132, 270 described 126 commands, formatting 307 configuration file downloading 195 uploading 193 configuration file, downloading or uploading 193, 300 console idle timeout configuring 38, 211 default setting 320 CoS. See Class of Service (CoS) D default values, AT-S84 management software 319 DHCP client, enabling or disabling 35, 208 DHCP mode, default setting 321 E edge port default setting 326 described 150 F factory defaults list 319 resetting switch to 57, 227 flow control configuring 75 configuring on a single port 233 default setting 323 force version, default setting 326 G GARP VLAN Registration Protocol (GVRP) overview 122 gateway address configuring 32, 206 default setting 321 GVRP. See GARP VLAN Registration Protocol (GVRP) H hardware information 47, 218 hello time, described 149 help, context-sensitive 316 host/router timeout interval, default setting 325 I IEEE 802.1p standard 126 IGMP snooping configuring 140, 274 default setting 325 multicast groups 142 overview 138 status, default setting 325 IP address configuring 32, 206 default setting 321 K keyword abbreviations 316 L LACP port priority, described 85 LACP trunk described 84 guidelines

332 Index Link Aggregation Control Protocol. See LACP trunk local management session explained 19 quitting 29 starting 26 login name, configuring 38, 211 login password, configuring 38, 211 M management access defaults 320 management access level 21 management interface defaults 320 manager password, default setting 320 maximum multicast groups, default setting 325 menus interface, using 28 mirrored port, defined 98 mirroring port, defined 98 multicast groups, viewing 142 multicast router ports mode, default setting 325 P password, configuring 40, 211 path cost, described 147 pinging 52, 223 point-to-point port default setting 326 described 150 port duplex mode, configuring 73 enabling or disabling 72 parameters, displaying 70 speed, configuring 73 status, default setting 323 port control 802.1x port-based access control 169, 291 force-authorized 170, 291 force-unauthorized 170, 291 port cost default setting 326 described 147 port duplex mode configuring on a single port 233 configuring on multiple ports 230 port mirroring configuring 99, 252 described 98 disabling 101, 253 port priority, described 148 port role, default setting 327 port speed configuring on a single port 233 configuring on multiple ports 230 port statistics, displaying 77, 236 port status enabling or disabling on a single port 233 enabling or disabling on multiple ports 230 port trunk configuring 88 creating 244 description 82 disabling 91, 245 enabling 91, 245 guidelines 83 modifying 90 port VLAN identifier (PVID) configuring 116, 258 Q Quality of Service (QoS) configuring 129, 267 default settings 324 overview 126 R RADIUS configuring 181, 294 displaying settings 183 guidelines 180 overview 180 Rapid Spanning Tree Protocol (RSTP) advanced port settings, configuring 161 and VLANs 152 basic port settings, configuring 159 configuring 156, 278 default settings 326 enabling or disabling 153 port configuration, displaying 164 remote management access defaults 320 remote management session quitting 204 starting 20, 200 RJ-45 serial terminal port, default settings 321 root bridge 146 RSTP. See Rapid Spanning Tree Protocol (RSTP) S Simple Network Time Protocol (SNTP) 44 SNMP authentication traps, enabling 63 community name 60 default setting for remote management 320 default settings 322 SNMP agent enabling 240 enabling or disabling 62 SNMP authentication traps, enabling 63 SNMP community string access mode 60 default 61, 64 default name 322 default, changing 241 name 60 operating status 60 SNMP management, default setting 322 SNMP trap receiver adding 65 deleting 67 disabling

333 AT-S84 Management Software User s Guide enabling 65 modifying 66 SNTP 44 SNTP, configuring 217 software information 47, 218 static port trunk described 82 statistics, displaying 77, 236 STP compatibility, configuring 158 subnet mask configuring 32, 206 default setting 321 supplicant, described 168 switch hardware information 47, 218 rebooting 50, 221 software information 47, 218 system contact configuring 36, 209 default 321 system description, default 321 system location configuring 36, 209 default setting 321 system log, clearing 55, 225 system log, displaying 55, 225 system name configuring 36, 209 default setting 321 web server default setting 320 enabling or disabling 42, 215 T tagged VLAN example 111 Telnet server, enabling or disabling 43, 216 Telnet, default setting for remote management 320 trap, described 61 U untagged ports, described 106 user name, configuring 211 V VLAN configuring PVID of untagged ports 116, 258 creating 113, 256 deleting 120, 264 deleting all 265 description 104 displaying 117, 261 guidelines 108 modifying 119, 262 resetting to the default 121 VLAN ID, described 106 W web browser management session quitting 204 starting 20, 200 web browser tools

334 Index 334